LED power supply with wireless control

Abstract

The utility model relates to the technical field of dimming circuits, and discloses an LED power supply with wireless control, which comprises a power supply output control circuit and a power supply driving output circuit, the power output control circuit is connected with the power drive output circuit. According to the invention, the power supply output control circuit obtains the voltage to be set through the wireless communication circuit; and the power supply output driving circuit converts the 220V voltage into the voltage to be set and then supplies power to the carried LED load, so that a corresponding shielding wire does not need to be arranged in LED arrangement, the cost is reduced, the field complexity is also reduced, and the potential safety hazard and the construction difficulty existing in subsequent maintenance are reduced.

Description

Technical Field

[0001] The present application relates to the technical field of dimming circuits, and in particular to an LED power supply with wireless control. Background Art

[0002] In traditional LED power supplies, some power supplies use wired control methods. This requires on-site wiring and the purchase of corresponding shielded wires, which increases manpower and costs. At the same time, the more wiring is done, the more complex the site will be, making subsequent maintenance more inconvenient, and increasing safety hazards and construction difficulties. Utility Model Content

[0003] The purpose of this application is to provide an LED power supply with wireless control to solve the technical problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the present application discloses the following technical solutions: an LED power supply with wireless control, comprising a power output control circuit and a power drive output circuit; the power output control circuit and the power drive output circuit are connected;

[0005] The power output control circuit includes a wireless communication circuit, a single chip circuit and an LDO circuit;

[0006] The wireless communication circuit includes a mainboard U6, a resistor R53, a resistor R55 and a capacitor C39; pin 1 of the mainboard U6 is connected to pin 1 of the capacitor C39 and then grounded, pin 2 of the mainboard U6 and pin 2 of the capacitor C39 are both connected to +5V, pin 4 of the mainboard U6 and pin 5 of the mainboard U6 are both connected to the single-chip circuit, pin 6 of the mainboard U6 is connected to pin 1 of the resistor R55, and pin 7 of the mainboard U6 is connected to pin 1 of the resistor R53;

[0007] The single-chip circuit includes a mainboard U5, a resistor R52, a resistor R50, a capacitor C36, a capacitor C34, a resistor R51, a capacitor C35, a capacitor C37 and a crystal oscillator X1; pin 20 of the mainboard U5 is connected to pin 1 of the resistor R52, and the pin of the resistor R52 is connected to the power drive output circuit; pin 2 of the mainboard U5 is connected to pin 4 of the mainboard U6, pin 3 of the mainboard U5 is connected to pin 5 of the mainboard U5, pin 1 of the resistor R50 and pin 1 of the capacitor C36 are both connected to pin 4 of the mainboard U5, and pin 2 of the capacitor C36 is connected to pin 1 of the mainboard U6. Ground; Pin 1 of the resistor R51, Pin 1 of the crystal oscillator X1 and Pin 1 of the capacitor C37 are all connected to Pin 5 of the motherboard U5, Pin 2 of the resistor R51, Pin 2 of the crystal oscillator X1 and Pin 1 of the capacitor C35 are all connected to Pin 6 of the motherboard U5; Pin 2 of the capacitor C35 and Pin 2 of the capacitor C37 are connected and then grounded; Pin 7 of the motherboard U5 is connected to Pin 1 of the capacitor C34 and then grounded, Pin 8 of the motherboard U5 is connected to Pin 2 of the capacitor C34, Pin 9 of the motherboard U5 and Pin 2 of the resistor R50 are connected and then connected to +5V;

[0008] The LDO circuit includes a mainboard U7, a resistor R54, a resistor R56 and a capacitor C38; pin 1 of the mainboard U7 and pin 1 of the capacitor C38 are connected to +5V, pin 2 of the mainboard U7 and pin 2 of the capacitor C38 are connected to ground, pin 1 of the resistor R54 and pin 1 of the resistor R56 are both connected to pin 3 of the mainboard U7, and pin 2 of the resistor R54 and pin 2 of the resistor R56 are connected to the power drive output circuit.

[0009] Preferably, the power drive output circuit includes a PFC circuit and a DC to DC circuit;

[0010] The PFC circuit includes capacitor CX1, resistor MOV1, resistor MOV2, resistor MOV3, excitation coil LF1, capacitor C16, capacitor C18, capacitor C15, L3, rectifier bridge D4, diode D13, diode D14, capacitor C1, capacitor C2, resistor R1, inductor JP1, transformer L1, diode D1, resistor R22, capacitor C19, motherboard U1, diode D2, MOS tube Q1, thermistor RT1, polarity capacitor C3, capacitor C4, resistor R2, resistor R3, resistor R4, capacitor C5, transformer T1, resistor R9, resistor R11, resistor R13, resistor R14, capacitor C13, capacitor C12, resistor R18, diode D9, resistor R17, Resistor R23, resistor R24, resistor R10, diode D6, MOS tube Q2, diode D8, resistor R15, resistor R16, resistor R21, resistor R27, capacitor C20, resistor R20, resistor R33, resistor R34, resistor R35, resistor R36, resistor R37, capacitor C26, resistor R44, capacitor C31, capacitor C32, capacitor C27, resistor R45, resistor R46, capacitor C28, thermistor RT2, optical coupler sensor U3, optical coupler sensor U4, capacitor C33, resistor R49, resistor R39, resistor R31, diode D10, diode D11, resistor R29, polar capacitor C22, capacitor C23, Zener diode D17 and polar capacitor R38;

[0011] Pin 1 of the capacitor CX1, pin 1 of the resistor MOV2, pin 1 of the resistor MOV1 and pin 1 of the excitation coil LF1 are all connected to the neutral line, pin 2 of the capacitor CX1, pin 2 of the resistor MOV2, pin 2 of the resistor MOV3 and pin 2 of the excitation coil LF1 are all connected to the live line, pin 1 of the resistor MOV3, pin 2 of the resistor MOV1, pin 1 of the capacitor C16 and pin 1 of the capacitor C18 are all connected to the ground line; pin 1 of the L3, pin 2 of the capacitor C15 and pin 2 of the capacitor C18 are all connected to pin 4 of the excitation coil LF3, pin 2 of the L3, pin 1 of the capacitor C15 and pin 2 of the capacitor C16 are all connected to the 3rd pin of the excitation coil LF1; the 3rd pin of the L3 and the positive electrode of the diode D13 are all connected to the 1st pin of the rectifier bridge D4, the 4th pin of the L3 and the positive electrode of the diode D14 are all connected to the 3rd pin of the rectifier bridge D4, the 2nd pin of the capacitor C1, the 2nd pin of the capacitor C2 and the 4th pin of the rectifier bridge D4 are connected and then grounded, the 2nd pin of the rectifier bridge D4, the 1st pin of the capacitor C1 and the 1st pin of the resistor R1 are all connected to the 1st pin of the inductor JP1, the 2nd pin of the resistor R1, the 2nd pin of the inductor JP1, the 1st pin of the capacitor C1 and the positive electrode of the diode D1 are all connected to the 1st pin of the L1, the 4th pin of the L1 is grounded, and the Pin 2 is connected to pin 1 of the resistor R22, pin 2 of the resistor R22 and pin 14 of the mainboard U1 are connected to pin 1 of the capacitor C19, and pin 2 of the capacitor C19 is grounded; pin 3 of the L1 and the drain of the MOS tube Q1 are connected to the positive electrode of the diode D2, and the negative electrode of the diode Q1 and the negative electrode of the diode D2 are connected to pin 1 of the thermistor RT1; pin 2 of the thermistor RT1, the positive electrode of the polar capacitor C3, pin 1 of the capacitor C4, pin 1 of the resistor R2, pin 1 of the resistor R3, pin 1 of the resistor R4, and pin 1 of the capacitor C5 are all connected to the transformer T1, and the negative electrode of the polar capacitor C3, Pin 2 of the capacitor C2, pin 2 of the resistor R9, pin 2 of the resistor R11, pin 1 of the resistor R13, pin 1 of the resistor R14 and pin 1 of the capacitor C13 are connected to ground, pin 1 of the resistor R9, pin 1 of the resistor R18 and pin 1 of the capacitor C12 are all connected to the source of the MOS tube, pin 2 of the resistor R18 and pin 2 of the capacitor C12 are connected to pin 4 of the mainboard U1; pin 1 of the resistor R11, pin 1 of the resistor R17 and the positive electrode of the diode D9 are all connected to the gate of the MOS tube Q1, pin 2 of the resistor R17 and pin 2 of the resistor R23 are connected to pin 6 of the mainboard U1;Pin 2 of the resistor R2 is connected to pin 1 of the resistor R10, pin 2 of the resistor R10, pin 2 of the resistor R13, pin 2 of the resistor R14, pin 2 of the capacitor C13 and pin 1 of the resistor R24 ​​are all connected to pin 3 of the mainboard U1, and pin 2 of the resistor R14 is connected to pin 1 of the mainboard U1; pin 2 of the resistor R4 is connected to pin 2 of the capacitor C5, pin 2 of the resistor R3 is connected to the cathode of the diode D6, the drain of the MOS tube Q2 and the anode of the diode D6 are all connected to the transformer T1, the anode of the diode D8, pin 1 of the resistor R15 and pin 1 of R16 are all connected to the gate of the MOS tube Q2, and the anode of the resistor R27 is connected to the cathode of the diode D6. The 2nd pin of the diode D8 is connected to the source of the MOS tube Q2, the 2nd pin of the resistor R16 is connected to the 2nd pin of the resistor R21 and then grounded, the cathode of the diode D8 is connected to the 1st pin of the resistor R20, the 2nd pin of the resistor R20 and the 2nd pin of the resistor R15 are connected to the 8th pin of the motherboard U1, the 1st pin of the capacitor C20 and the 1st pin of the resistor R27 are connected to the 5th pin of the motherboard U1, and the 2nd pin of the capacitor C20 is grounded; the cathode of the diode D14, the 1st pin of the resistor R33, and the 1st pin of the resistor R35 are all connected to the cathode of the diode 13; the 2nd pin of the resistor R33 is connected to the 1st pin of the resistor R34, and the 2nd pin of the resistor R34 is connected to the The 16th pin of the motherboard U1 is connected; the 1st pin of the resistor R37 and the 1st pin of the capacitor C26 are both connected to the 2nd pin of the resistor R35; the 2nd pin of the resistor R37 and the 2nd pin of the capacitor C26 are connected to the 13th pin of the motherboard U1, the 9th pin of the motherboard U1 is grounded, the 1st pin of the resistor R44 is connected to the 2nd pin of the motherboard U1, the 1st pin of the capacitor C31 and the 1st pin of the capacitor C321 are both connected to the 2nd pin of the resistor R44, the 2nd pin of the capacitor C31, the 2nd pin of the capacitor C32, the 2nd pin of the capacitor C27, the 2nd pin of the thermistor RT2, the 2nd pin of the capacitor C28, the 3rd pin of the optical coupler sensor U4 and the 3rd pin of the optical coupler sensor U3 are connected to the ground; the Pin 1 of capacitor C27, pin 1 of resistor R45 and pin 1 of resistor R46 are all connected to pin 12 of mainboard U1; pin 2 of resistor R45 is connected to pin 1 of thermistor RT2; pin 2 of resistor R46 is connected to pin 4 of optocoupler sensor U3; pin 2 of optocoupler sensor U3 is grounded, and pin 1 of optocoupler sensor U3 is connected to the DC-to-DC circuit; pin 1 of capacitor C28 and pin 1 of resistor R47 are all connected to pin 11 of mainboard U1; pin 2 of resistor R47 is connected to pin 4 of optocoupler sensor U4, pin 2 of optocoupler sensor U4 is connected to the DC-to-DC circuit, and pin 1 of optocoupler sensor U4 is connected to the DC-to-DC circuit;Pin 1 of the capacitor C33, pin 1 of the resistor R49 and pin 2 of the resistor R39 are all connected to pin 10 of the motherboard U1; pin 2 of the capacitor C33 and pin 2 of the resistor R49 are connected to ground; pin 2 of the resistor R31, pin 1 of the capacitor C23 and the positive electrode of the polar capacitor C22 are all connected to pin 7 of the motherboard U1; the negative electrode of the polar capacitor C22, pin 2 of the capacitor C23, the positive electrode of the voltage regulator diode D17, the positive electrode of the resistor R31, the positive electrode of the capacitor C22, the positive electrode of the capacitor C22, the positive electrode of the capacitor C23, the positive electrode of the capacitor C2 ... Pin 2 of the resistor R38 is connected to the negative electrode of the polar capacitor C24 and then grounded; Pin 1 of the resistor R31 is connected to the negative electrode of the diode D10, the negative electrode of the diode D11, the negative electrode of the voltage stabilizing diode D17, Pin 1 of the resistor R38 and the positive electrode of the polar capacitor C24 are all connected to the positive electrode of the diode D10, the positive electrode of the diode D11 is connected to Pin 1 of the resistor R29, and Pin 2 of the resistor R29 is connected to the DC-to-DC circuit;

[0012] The DC to DC circuit includes a mainboard U2, a capacitor C29, a diode D18, a voltage stabilizing diode D15, a diode D12, a resistor R25, a polar capacitor C14, a resistor R30, a diode D16, a diode D19, a resistor R14, a capacitor C17, a resistor R30, a diode D16, a diode D19, a resistor R41, a capacitor C30, a capacitor C25, a resistor R26, a resistor R48, a resistor R42, a resistor R43, a sliding rheostat R28, a resistor R32, a capacitor C9, a polar capacitor C10, a resistor R6, a transformer L2, a capacitor C6, a diode D3, a diode D5, a resistor R7, a resistor R5, a polar capacitor C7, a polar capacitor C8, a voltage stabilizing diode D7, a resistor R8, a capacitor C11, a resistor R12 and a resistor R19;

[0013] Pin 1 of the capacitor C29 is grounded, pin 2 of the capacitor C29, pin 2 of the resistor R40, the cathode of the diode D18 and pin 2 of the capacitor C21 are connected and then grounded, the anode of the diode D18 is connected to the anode of the voltage-stabilizing diode D15, the anode of the diode D12 is connected to pin 2 of the resistor R19 and then grounded; the cathode of the diode D12, the cathode of the voltage-stabilizing diode D15, pin 1 of the capacitor C12, pin 8 of the motherboard U2, pin 1 of the resistor R25 and the polarity The positive electrode of the capacitor C14 is connected to the POWRER end of the LDO circuit, and the 2nd pin of the resistor R54 and the 2nd pin of the resistor R56 are connected to the POWRER end of the LDO circuit; the 2nd pin of the resistor R25 is connected to the 1st pin of the optical coupler sensor U4; the 2nd pin of the capacitor C17 and the 1st pin of the resistor R30 are both connected to the 7th pin of the mainboard U2, the 1st pin of the capacitor C17 is connected to the 1st pin of the resistor R26, and the 2nd pin of the resistor R26 is connected to the 6th pin of the mainboard U2;Pin 2 of the resistor R30 is connected to the cathode of the diode D16, the anode of the diode D16 and the anode of the diode D19 are both connected to pin 2 of the optocoupler sensor U4, the cathode of the diode D19 is connected to pin 2 of the resistor R41, pin 1 of the resistor R41, pin 1 of the capacitor C30, pin 1 of the capacitor C25 are connected to pin 1 of the motherboard U2, pin 2 of the capacitor C25 is connected to pin 2 of the resistor R48, pin 2 of the capacitor C30, pin 1 of the resistor R48, pin 2 of the resistor R42 and Pin 2 of the resistor R43 is connected to pin 2 of the main board U2, pin 3 of the main board U2 is connected to pin 20 of the main board U5, pin 4 of the main board U2 is connected to pin 1 of the resistor R42 and then grounded, pin 5 of the main board U2 is connected to pin 2 of the sliding rheostat R28, pin 1 of the sliding rheostat R28 is grounded, pin 1 of the resistor R43 is connected to pin 2 of the resistor R32, pin 2 of the transformer L2, pin 1 of the capacitor C9, pin 1 of the resistor R32, the positive electrode of the polarity capacitor C10 and the resistor R6 The 1st pin of the transformer L2 is connected to the positive electrode of the output, the 4th pin of the transformer L2, the 2nd pin of the capacitor C9, the negative electrode of the polar capacitor C10 and the 2nd pin of the resistor R6 are connected to the negative electrode of the output, the 1st pin of the capacitor C6, the positive electrode of the diode D3 and the positive electrode of the diode D5 are connected to the transformer T1, the 2nd pin of the capacitor C6 is connected to the 1st pin of the resistor R7, the negative electrode of the diode D3, the negative electrode of the diode D5, the 2nd pin of the resistor R7, the 1st pin of the resistor R5, the positive electrode of the polar capacitor C7, the voltage regulator diode The negative electrode of the pole tube D7 and the positive electrode of the polar capacitor C8 are connected to the 1st pin of the transformer L2, the positive electrode of the voltage stabilizing diode D17 is connected to the 1st pin of the resistor R19, the transformer T1, the negative electrode of the polar capacitor C7, the negative electrode of the polar capacitor C8, the 1st pin of the resistor R8, the 1st pin of the capacitor C11 and the negative electrode of the polar capacitor C14 are connected and then grounded, the 3rd pin of the capacitor C11 and the 2nd pin of the resistor R12 are connected, the 2nd pin of the resistor R8 and the 1st pin of the resistor R12 are connected to the 3rd pin of the transformer L2.;

[0014] Beneficial effect: The LED power supply circuit with wireless control of the present application is composed of a power output control circuit and a power output drive circuit; the power output control circuit obtains the voltage to be set through the wireless communication circuit; the power output drive circuit converts the 220V voltage into the voltage to be set and then supplies power to the mounted LED load, thereby eliminating the need to set corresponding shielded wires in the LED arrangement, reducing costs while also reducing the complexity of the site, and reducing the safety hazards and construction difficulties of subsequent maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 A schematic diagram of a power output control circuit provided in an embodiment of the present application;

[0017] Figure 2 A schematic diagram of a power output drive circuit provided in an embodiment of the present application. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present application are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0019] In this article, the term "comprising" is intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of more restrictions, the elements defined by the sentence "comprising..." do not exclude the presence of other identical elements in the process, method, article or device that includes the elements.

[0020] This embodiment discloses an LED power circuit with wireless control, including a power output control circuit that obtains the voltage to be set wirelessly and a power drive output circuit that converts 220V voltage into the voltage to be set; the power output control circuit and the power drive output circuit are connected.

[0021] In this embodiment, if Figure 1 As shown, the power output control circuit includes a wireless communication circuit, a single-chip microcomputer circuit and an LDO circuit.

[0022] Specifically, the wireless communication circuit includes a mainboard U6, a resistor R53, a resistor R55 and a capacitor C39; pin 1 of the mainboard U6 is connected to pin 1 of the capacitor C39 and then grounded, pin 2 of the mainboard U6 and pin 2 of the capacitor C39 are both connected to +5V, pin 4 of the mainboard U6 and pin 5 of the mainboard U6 are both connected to the single-chip circuit, pin 6 of the mainboard U6 is connected to pin 1 of the resistor R55, and pin 7 of the mainboard U6 is connected to pin 1 of the resistor R53. The model of the mainboard U6 can be but is not limited to AS69-20T. The wireless communication circuit transmits the received data to the single-chip circuit.

[0023] Specifically, the single-chip circuit includes a mainboard U5, a resistor R52, a resistor R50, a capacitor C36, a capacitor C34, a resistor R51, a capacitor C35, a capacitor C37 and a crystal oscillator X1; pin 20 of the mainboard U5 is connected to pin 1 of the resistor R52, and the pin of the resistor R52 is connected to the power drive output circuit; pin 2 of the mainboard U5 is connected to pin 4 of the mainboard U6, pin 3 of the mainboard U5 is connected to pin 5 of the mainboard U5, pin 1 of the resistor R50 and pin 1 of the capacitor C36 are both connected to pin 4 of the mainboard U5, and the capacitor C37 is connected to the power drive output circuit; Pin 2 of 6 is grounded; Pin 1 of resistor R51, Pin 1 of crystal oscillator X1 and Pin 1 of capacitor C37 are all connected to Pin 5 of motherboard U5, Pin 2 of resistor R51, Pin 2 of crystal oscillator X1 and Pin 1 of capacitor C35 are all connected to Pin 6 of motherboard U5; Pin 2 of capacitor C35 and Pin 2 of capacitor C37 are connected and then grounded; Pin 7 of motherboard U5 is connected to Pin 1 of capacitor C34 and then grounded, Pin 8 of motherboard U5 is connected to Pin 2 of capacitor C34, Pin 9 of motherboard U5 and Pin 2 of resistor R50 are connected and then connected to +5V. The model of motherboard U5 can be but not limited to STM8S103F3P3, and the model of crystal oscillator X1 can be but not limited to X49SD8MSB2SI. The single-chip microcomputer circuit processes the received data.

[0024] Specifically, the LDO circuit includes a mainboard U7, a resistor R54, a resistor R56 and a capacitor C38; pin 1 of the mainboard U7 and pin 1 of the capacitor C38 are connected to +5V, pin 2 of the mainboard U7 and pin 2 of the capacitor C38 are connected to ground, pin 1 of the resistor R54 and pin 1 of the resistor R56 are both connected to pin 3 of the mainboard U7, and pin 2 of the resistor R54 and pin 2 of the resistor R56 are connected to the power drive output circuit. The model of the mainboard U7 can be, but is not limited to, 78L05. The LDO circuit provides the required power for the single-chip circuit and the wireless communication circuit.

[0025] In this embodiment, if Figure 2 As shown, the power drive output circuit includes a PFC circuit and a DC to DC circuit.

[0026] Specifically, the PFC circuit includes capacitor CX1, resistor MOV1, resistor MOV2, resistor MOV3, excitation coil LF1, capacitor C16, capacitor C18, capacitor C15, L3, rectifier bridge D4, diode D13, diode D14, capacitor C1, capacitor C2, resistor R1, inductor JP1, transformer L1, diode D1, resistor R22, capacitor C19, motherboard U1, diode D2, MOS tube Q1, thermistor RT1, polarity capacitor C3, capacitor C4, resistor R2, resistor R3, resistor R4, capacitor C5, transformer T1, resistor R9, resistor R11, resistor R13, resistor R14, capacitor C13, capacitor C12, resistor R18, diode D9, resistor R17, Resistor R23, resistor R24, resistor R10, diode D6, MOS tube Q2, diode D8, resistor R15, resistor R16, resistor R21, resistor R27, capacitor C20, resistor R20, resistor R33, resistor R34, resistor R35, resistor R36, resistor R37, capacitor C26, resistor R44, capacitor C31, capacitor C32, capacitor C27, resistor R45, resistor R46, capacitor C28, thermistor RT2, optical coupler sensor U3, optical coupler sensor U4, capacitor C33, resistor R49, resistor R39, resistor R31, diode D10, diode D11, resistor R29, polarity capacitor C22, capacitor C23, Zener diode D17 and polarity capacitor R38.

[0027] Among them, pin 1 of capacitor CX1, pin 1 of resistor MOV2, pin 1 of resistor MOV1 and pin 1 of excitation coil LF1 are all connected to the neutral line, pin 2 of capacitor CX1, pin 2 of resistor MOV2, pin 2 of resistor MOV3 and pin 2 of excitation coil LF1 are all connected to the live line, pin 1 of resistor MOV3, pin 2 of resistor MOV1, pin 1 of capacitor C16 and pin 1 of capacitor C18 are all connected to the ground line; pin 1 of L3, pin 2 of capacitor C15 and pin 2 of capacitor C18 are all connected to pin 4 of excitation coil LF3, pin 2 of L3, pin 1 of capacitor C15 and pin 2 of capacitor C16 are all connected to pin 3 of excitation coil LF1; pin 3 of L3 The positive electrode of L1 and diode D13 are connected to pin 1 of rectifier bridge D4, pin 4 of L3 and the positive electrode of diode D14 are connected to pin 3 of rectifier bridge D4, pin 2 of capacitor C1, pin 2 of capacitor C2 and pin 4 of rectifier bridge D4 are connected and grounded, pin 2 of rectifier bridge D4, pin 1 of capacitor C1 and pin 1 of resistor R1 are connected to pin 1 of inductor JP1, pin 2 of resistor R1, pin 2 of inductor JP1, pin 1 of capacitor C1 and the positive electrode of diode D1 are connected to pin 1 of L1, pin 4 of L1 is grounded, pin 2 of L1 is connected to pin 1 of resistor R22, pin 2 of resistor R22 and pin 14 of mainboard U1 are connected to pin 1 of capacitor C19, and pin 2 of resistor R22 is connected to pin 1 of capacitor C19. Pin 2 of capacitor C19 is grounded; Pin 3 of L1 and the drain of MOS tube Q1 are connected to the positive electrode of diode D2, and the negative electrode of diode Q1 and the negative electrode of diode D2 are connected to pin 1 of thermistor RT1; Pin 2 of thermistor RT1, the positive electrode of polar capacitor C3, pin 1 of capacitor C4, pin 1 of resistor R2, pin 1 of resistor R3, pin 1 of resistor R4, and pin 1 of capacitor C5 are all connected to transformer T1, the negative electrode of polar capacitor C3, pin 2 of capacitor C2, pin 2 of resistor R9, pin 2 of resistor R11, pin 1 of resistor R13, pin 1 of resistor R14, and pin 1 of capacitor C13 are connected and then grounded, pin 1 of resistor R9, and pin R18 Pin 1 of resistor R18 and pin 1 of capacitor C12 are connected to the source of the MOS tube, pin 2 of resistor R18 and pin 2 of capacitor C12 are connected to pin 4 of the mainboard U1; pin 1 of resistor R11, pin 1 of resistor R17 and the positive electrode of diode D9 are connected to the gate of MOS tube Q1, pin 2 of resistor R17 and pin 2 of resistor R23 are connected to pin 6 of the mainboard U1; pin 2 of resistor R2 is connected to pin 1 of resistor R10, pin 2 of resistor R10, pin 2 of resistor R13, pin 2 of resistor R14, pin 2 of capacitor C13 and pin 1 of resistor R24 ​​are connected to pin 3 of the mainboard U1, and pin 2 of resistor R14 is connected to pin 1 of the mainboard U1;Pin 2 of resistor R4 is connected to pin 2 of capacitor C5, pin 2 of resistor R3 is connected to the cathode of diode D6, the drain of MOS tube Q2 and the anode of diode D6 are connected to transformer T1, the anode of diode D8, pin 1 of resistor R15 and pin 1 of R16 are connected to the gate of MOS tube Q2, pin 2 of resistor R27 and pin 1 of resistor R21 are connected to the source of MOS tube Q2, pin 2 of resistor R16 and pin 2 of resistor R21 are connected to ground, the cathode of diode D8 is connected to pin 1 of resistor R20, pin 2 of resistor R20 and pin 2 of resistor R15 are connected to pin 8 of mainboard U1, pin 1 of capacitor C20 and pin 1 of resistor R27 ... gate of MOS tube Q2, the anode of diode D8 is connected to pin 1 of resistor R20, the anode of resistor R20 and pin 2 of resistor R15 are connected to pin 8 of mainboard U1, the anode of capacitor C20 and pin 1 of resistor R27 are connected to the gate of MOS tube Q2, the anode of diode D8 and the anode of resistor R27 are connected to the gate of MOS tube Q2, the anode of diode D8 and the anode of resistor R27 are connected to the gate of MOS tube Q2, the anode of diode D8 and the anode of resistor R27 are connected to the gate of MOS tube Q2, the anode of diode D8 and the anode of resistor R27 are connected to the gate of MOS tube Q2, the anode The cathode of diode D14, the 1st pin of resistor R33 and the 1st pin of resistor R35 are all connected to the cathode of diode 13; the 2nd pin of resistor R33 is connected to the 1st pin of resistor R34, and the 2nd pin of resistor R34 is connected to the 16th pin of motherboard U1; the 1st pin of resistor R37 and the 1st pin of capacitor C26 are all connected to the 2nd pin of resistor R35; the 2nd pin of resistor R37 and the 2nd pin of capacitor C26 are connected to the 13th pin of motherboard U1, and the 9th pin of motherboard U1 is grounded; the 1st pin of resistor R44 is connected to the 2nd pin of motherboard U1, and the 1st pin of capacitor C31 and the 1st pin of capacitor C321 are all connected to the 2nd pin of resistor R44. Pin 2 of capacitor C31, pin 2 of capacitor C32, pin 2 of capacitor C27, pin 2 of thermistor RT2, pin 2 of capacitor C28, pin 3 of optocoupler sensor U4 and pin 3 of optocoupler sensor U3 are connected to ground and then grounded; pin 1 of capacitor C27, pin 1 of resistor R45 and pin 1 of resistor R46 are all connected to pin 12 of mainboard U1; pin 2 of resistor R45 is connected to pin 1 of thermistor RT2; pin 2 of resistor R46 is connected to pin 4 of optocoupler sensor U3; pin 2 of optocoupler sensor U3 is grounded, and pin 1 of optocoupler sensor U3 is connected to the DC to DC circuit; pin 1 of capacitor C28 and pin 1 of resistor R47 are all connected to pin 11 of mainboard U1; Pin 2 of resistor R47 is connected to pin 4 of optocoupler sensor U4, pin 2 of optocoupler sensor U4 is connected to DC-to-DC circuit, and pin 1 of optocoupler sensor U4 is connected to DC-to-DC circuit; pin 1 of capacitor C33, pin 1 of resistor R49 and pin 2 of resistor R39 are all connected to pin 10 of mainboard U1; pin 2 of capacitor C33 and pin 2 of resistor R49 are connected to ground; pin 2 of resistor R31, pin 1 of capacitor C23 and the positive electrode of polar capacitor C22 are all connected to pin 7 of mainboard U1; the negative electrode of polar capacitor C22, pin 2 of capacitor C23, the positive electrode of voltage regulator diode D17, pin 2 of resistor R38 and the negative electrode of polar capacitor C24 are connected to ground;Pin 1 of resistor R31 is connected to the cathode of diode D10, the cathode of diode D11, the cathode of voltage stabilizing diode D17, pin 1 of resistor R38 and the anode of polarity capacitor C24 are all connected to the anode of diode D10, the anode of diode D11 is connected to pin 1 of resistor R29, and pin 2 of resistor R29 is connected to the DC to DC circuit. The model of mainboard U1 can be but not limited to FAN6921BMRMY, the model of optocoupler sensor U3 can be but not limited to EL817C, and the model of optocoupler sensor U4 can be but not limited to EL817C. The PFC circuit converts 220V voltage into a square wave signal and improves the efficiency of the power supply. ;

[0028] Specifically, the DC to DC circuit includes a mainboard U2, a capacitor C29, a diode D18, a Zener diode D15, a diode D12, a resistor R25, a polar capacitor C14, a resistor R30, a diode D16, a diode D19, a resistor R14, a capacitor C17, a resistor R30, a diode D16, a diode D19, a resistor R41, a capacitor C30, a capacitor C25, a resistor R26, a resistor R48, a resistor R42, a resistor R43, a sliding rheostat R28, a resistor R32, a capacitor C9, a polar capacitor C10, a resistor R6, a transformer L2, a capacitor C6, a diode D3, a diode D5, a resistor R7, a resistor R5, a polar capacitor C7, a polar capacitor C8, a Zener diode D7, a resistor R8, a capacitor C11, a resistor R12 and a resistor R19.

[0029] Among them, pin 1 of capacitor C29 is grounded, pin 2 of capacitor C29, pin 2 of resistor R40, the cathode of diode D18 and pin 2 of capacitor C21 are connected and then grounded, the anode of diode D18 is connected to the anode of voltage zener diode D15, the anode of diode D12 is connected to pin 2 of resistor R19 and then grounded; the cathode of diode D12, the cathode of voltage zener diode D15, pin 1 of capacitor C12, pin 8 of mainboard U2, pin 1 of resistor R25 and the anode of polarity capacitor C14 are connected and then connected to the POWRER end of the LDO circuit, pin 2 of resistor R54 and pin 2 of resistor R56 are connected and then connected to the POWRER end of the LDO circuit; pin 2 of resistor R25 is connected to the cathode of optocoupler sensor U4. Pin 1 of capacitor C17 and pin 1 of resistor R30 are both connected to pin 7 of motherboard U2, pin 1 of capacitor C17 is connected to pin 1 of resistor R26, and pin 2 of resistor R26 is connected to pin 6 of motherboard U2; pin 2 of resistor R30 is connected to the cathode of diode D16, the anode of diode D16 and the anode of diode D19 are both connected to pin 2 of optocoupler sensor U4, the cathode of diode D19 is connected to pin 2 of resistor R41, pin 1 of resistor R41, pin 1 of capacitor C30, and pin 1 of capacitor C25 are connected to pin 1 of motherboard U2, pin 2 of capacitor C25 is connected to pin 2 of resistor R48, pin 2 of capacitor C30, pin 1 of resistor R48, pin 2 of resistor R42 and resistor Pin 2 of R43 is connected to pin 2 of mainboard U2, pin 3 of mainboard U2 is connected to pin 20 of mainboard U5, pin 4 of mainboard U2 is connected to pin 1 of resistor R42 and then grounded, pin 5 of mainboard U2 is connected to pin 2 of sliding rheostat R28, pin 1 of sliding rheostat R28 is grounded, pin 1 of resistor R43 is connected to pin 2 of resistor R32, pin 2 of transformer L2, pin 1 of capacitor C9, pin 1 of resistor R32, the positive electrode of polar capacitor C10 and pin 1 of resistor R6 are all connected to the output positive electrode, pin 4 of transformer L2, pin 2 of capacitor C9, the negative electrode of polar capacitor C10 and pin 2 of resistor R6 are all connected to the output negative electrode, pin 1 of capacitor C6, the positive electrode of diode D3 and the positive electrode of diode D5 are all connected to the output negative electrode. The two poles are connected to transformer T1, the 2nd pin of capacitor C6 is connected to the 1st pin of resistor R7, the negative pole of diode D3, the negative pole of diode D5, the 2nd pin of resistor R7, the 1st pin of resistor R5, the positive pole of polar capacitor C7, the negative pole of voltage zener diode D7 and the positive pole of polar capacitor C8 are all connected to the 1st pin of transformer L2, the positive pole of voltage zener diode D17 is connected to the 1st pin of resistor R19, the negative pole of transformer T1, the negative pole of polar capacitor C7, the negative pole of polar capacitor C8, the 1st pin of resistor R8, the 1st pin of capacitor C11 and the negative pole of polar capacitor C14 are connected and then grounded, the 3rd pin of capacitor C11 is connected to the 2nd pin of resistor R12, the 2nd pin of resistor R8 and the 1st pin of resistor R12 are all connected to the 3rd pin of transformer L2. Among them, the model of mainboard U2 can be but not limited to LM358DT. The DC to DC circuit converts the 220V voltage into the voltage to be set.

[0030] In summary, the LED power supply circuit with wireless control in this embodiment is composed of a power output control circuit and a power output drive circuit; the power output control circuit obtains the voltage to be set through the wireless communication circuit; the power output drive circuit converts the 220V voltage into the voltage to be set and then supplies power to the LED load, thereby eliminating the need to set corresponding shielded wires in the LED arrangement, reducing costs while also reducing the complexity of the site, and reducing the safety hazards and construction difficulties of subsequent maintenance.

[0031] Finally, it should be noted that the above is only a preferred embodiment of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A LED power supply with wireless control, characterized in that: It includes a power output control circuit and a power drive output circuit; the power output control circuit and the power drive output circuit are connected; The power output control circuit includes a wireless communication circuit, a single chip circuit and an LDO circuit; The wireless communication circuit includes a mainboard U6, a resistor R53, a resistor R55 and a capacitor C39; pin 1 of the mainboard U6 is connected to pin 1 of the capacitor C39 and then grounded, pin 2 of the mainboard U6 and pin 2 of the capacitor C39 are both connected to +5V, pin 4 of the mainboard U6 and pin 5 of the mainboard U6 are both connected to the single-chip circuit, pin 6 of the mainboard U6 is connected to pin 1 of the resistor R55, and pin 7 of the mainboard U6 is connected to pin 1 of the resistor R53; The single-chip circuit includes a mainboard U5, a resistor R52, a resistor R50, a capacitor C36, a capacitor C34, a resistor R51, a capacitor C35, a capacitor C37 and a crystal oscillator X1; pin 20 of the mainboard U5 is connected to pin 1 of the resistor R52, and the pin of the resistor R52 is connected to the power drive output circuit; pin 2 of the mainboard U5 is connected to pin 4 of the mainboard U6, pin 3 of the mainboard U5 is connected to pin 5 of the mainboard U5, pin 1 of the resistor R50 and pin 1 of the capacitor C36 are both connected to pin 4 of the mainboard U5, and pin 2 of the capacitor C36 is grounded; Pin 1 of the resistor R51, pin 1 of the crystal oscillator X1 and pin 1 of the capacitor C37 are all connected to pin 5 of the mainboard U5, pin 2 of the resistor R51, pin 2 of the crystal oscillator X1 and pin 1 of the capacitor C35 are all connected to pin 6 of the mainboard U5; pin 2 of the capacitor C35 and pin 2 of the capacitor C37 are connected and then grounded; pin 7 of the mainboard U5 is connected to pin 1 of the capacitor C34 and then grounded, pin 8 of the mainboard U5 is connected to pin 2 of the capacitor C34, and pin 9 of the mainboard U5 and pin 2 of the resistor R50 are connected and then connected to +5V; The LDO circuit includes a mainboard U7, a resistor R54, a resistor R56 and a capacitor C38; pin 1 of the mainboard U7 and pin 1 of the capacitor C38 are connected to +5V, pin 2 of the mainboard U7 and pin 2 of the capacitor C38 are connected to ground, pin 1 of the resistor R54 and pin 1 of the resistor R56 are both connected to pin 3 of the mainboard U7, and pin 2 of the resistor R54 and pin 2 of the resistor R56 are connected to the power drive output circuit.

2. The LED power supply with wireless control according to claim 1, characterized in that: The power drive output circuit includes a PFC circuit and a DC to DC circuit; The PFC circuit includes capacitor CX1, resistor MOV1, resistor MOV2, resistor MOV3, excitation coil LF1, capacitor C16, capacitor C18, capacitor C15, L3, rectifier bridge D4, diode D13, diode D14, capacitor C1, capacitor C2, resistor R1, inductor JP1, transformer L1, diode D1, resistor R22, capacitor C19, motherboard U1, diode D2, MOS tube Q1, thermistor RT1, polarity capacitor C3, capacitor C4, resistor R2, resistor R3, resistor R4, capacitor C5, transformer T1, resistor R9, resistor R11, resistor R13, resistor R14, capacitor C13, capacitor C12, resistor R18, diode D9, resistor R17, Resistor R23, resistor R24, resistor R10, diode D6, MOS tube Q2, diode D8, resistor R15, resistor R16, resistor R21, resistor R27, capacitor C20, resistor R20, resistor R33, resistor R34, resistor R35, resistor R36, resistor R37, capacitor C26, resistor R44, capacitor C31, capacitor C32, capacitor C27, resistor R45, resistor R46, capacitor C28, thermistor RT2, optical coupler sensor U3, optical coupler sensor U4, capacitor C33, resistor R49, resistor R39, resistor R31, diode D10, diode D11, resistor R29, polar capacitor C22, capacitor C23, Zener diode D17 and polar capacitor R38; Pin 1 of the capacitor CX1, pin 1 of the resistor MOV2, pin 1 of the resistor MOV1 and pin 1 of the excitation coil LF1 are all connected to the neutral line, pin 2 of the capacitor CX1, pin 2 of the resistor MOV2, pin 2 of the resistor MOV3 and pin 2 of the excitation coil LF1 are all connected to the live line, pin 1 of the resistor MOV3, pin 2 of the resistor MOV1, pin 1 of the capacitor C16 and pin 1 of the capacitor C18 are all connected to the ground line; pin 1 of the L3, pin 2 of the capacitor C15 and pin 2 of the capacitor C18 are all connected to pin 4 of the excitation coil LF3, pin 2 of the L3, pin 1 of the capacitor C15 and pin 2 of the capacitor C16 are all connected to the 3rd pin of the excitation coil LF1; the 3rd pin of the L3 and the positive electrode of the diode D13 are all connected to the 1st pin of the rectifier bridge D4, the 4th pin of the L3 and the positive electrode of the diode D14 are all connected to the 3rd pin of the rectifier bridge D4, the 2nd pin of the capacitor C1, the 2nd pin of the capacitor C2 and the 4th pin of the rectifier bridge D4 are connected and then grounded, the 2nd pin of the rectifier bridge D4, the 1st pin of the capacitor C1 and the 1st pin of the resistor R1 are all connected to the 1st pin of the inductor JP1, the 2nd pin of the resistor R1, the 2nd pin of the inductor JP1, the 1st pin of the capacitor C1 and the positive electrode of the diode D1 are all connected to the 1st pin of the L1, the 4th pin of the L1 is grounded, and the Pin 2 is connected to pin 1 of the resistor R22, pin 2 of the resistor R22 and pin 14 of the mainboard U1 are connected to pin 1 of the capacitor C19, and pin 2 of the capacitor C19 is grounded; pin 3 of the L1 and the drain of the MOS tube Q1 are connected to the positive electrode of the diode D2, and the negative electrode of the diode Q1 and the negative electrode of the diode D2 are connected to pin 1 of the thermistor RT1; pin 2 of the thermistor RT1, the positive electrode of the polar capacitor C3, pin 1 of the capacitor C4, pin 1 of the resistor R2, pin 1 of the resistor R3, pin 1 of the resistor R4, and pin 1 of the capacitor C5 are all connected to the transformer T1, and the negative electrode of the polar capacitor C3, Pin 2 of the capacitor C2, pin 2 of the resistor R9, pin 2 of the resistor R11, pin 1 of the resistor R13, pin 1 of the resistor R14 and pin 1 of the capacitor C13 are connected to ground, pin 1 of the resistor R9, pin 1 of the resistor R18 and pin 1 of the capacitor C12 are all connected to the source of the MOS tube, pin 2 of the resistor R18 and pin 2 of the capacitor C12 are connected to pin 4 of the mainboard U1; pin 1 of the resistor R11, pin 1 of the resistor R17 and the positive electrode of the diode D9 are all connected to the gate of the MOS tube Q1, pin 2 of the resistor R17 and pin 2 of the resistor R23 are connected to pin 6 of the mainboard U1;Pin 2 of the resistor R2 is connected to pin 1 of the resistor R10, pin 2 of the resistor R10, pin 2 of the resistor R13, pin 2 of the resistor R14, pin 2 of the capacitor C13 and pin 1 of the resistor R24 ​​are all connected to pin 3 of the mainboard U1, and pin 2 of the resistor R14 is connected to pin 1 of the mainboard U1; pin 2 of the resistor R4 is connected to pin 2 of the capacitor C5, pin 2 of the resistor R3 is connected to the cathode of the diode D6, the drain of the MOS tube Q2 and the anode of the diode D6 are all connected to the transformer T1, the anode of the diode D8, pin 1 of the resistor R15 and pin 1 of R16 are all connected to the gate of the MOS tube Q2, and the anode of the resistor R27 is connected to the cathode of the diode D6. The 2nd pin of the diode D8 is connected to the source of the MOS tube Q2, the 2nd pin of the resistor R16 is connected to the 2nd pin of the resistor R21 and then grounded, the cathode of the diode D8 is connected to the 1st pin of the resistor R20, the 2nd pin of the resistor R20 and the 2nd pin of the resistor R15 are connected to the 8th pin of the motherboard U1, the 1st pin of the capacitor C20 and the 1st pin of the resistor R27 are connected to the 5th pin of the motherboard U1, and the 2nd pin of the capacitor C20 is grounded; the cathode of the diode D14, the 1st pin of the resistor R33, and the 1st pin of the resistor R35 are all connected to the cathode of the diode 13; the 2nd pin of the resistor R33 is connected to the 1st pin of the resistor R34, and the 2nd pin of the resistor R34 is connected to the The 16th pin of the motherboard U1 is connected; the 1st pin of the resistor R37 and the 1st pin of the capacitor C26 are both connected to the 2nd pin of the resistor R35; the 2nd pin of the resistor R37 and the 2nd pin of the capacitor C26 are connected to the 13th pin of the motherboard U1, the 9th pin of the motherboard U1 is grounded, the 1st pin of the resistor R44 is connected to the 2nd pin of the motherboard U1, the 1st pin of the capacitor C31 and the 1st pin of the capacitor C321 are both connected to the 2nd pin of the resistor R44, the 2nd pin of the capacitor C31, the 2nd pin of the capacitor C32, the 2nd pin of the capacitor C27, the 2nd pin of the thermistor RT2, the 2nd pin of the capacitor C28, the 3rd pin of the optical coupler sensor U4 and the 3rd pin of the optical coupler sensor U3 are connected to the ground; the Pin 1 of capacitor C27, pin 1 of resistor R45 and pin 1 of resistor R46 are all connected to pin 12 of mainboard U1; pin 2 of resistor R45 is connected to pin 1 of thermistor RT2; pin 2 of resistor R46 is connected to pin 4 of optocoupler sensor U3; pin 2 of optocoupler sensor U3 is grounded, and pin 1 of optocoupler sensor U3 is connected to the DC-to-DC circuit; pin 1 of capacitor C28 and pin 1 of resistor R47 are all connected to pin 11 of mainboard U1; pin 2 of resistor R47 is connected to pin 4 of optocoupler sensor U4, pin 2 of optocoupler sensor U4 is connected to the DC-to-DC circuit, and pin 1 of optocoupler sensor U4 is connected to the DC-to-DC circuit;Pin 1 of the capacitor C33, pin 1 of the resistor R49 and pin 2 of the resistor R39 are all connected to pin 10 of the motherboard U1; pin 2 of the capacitor C33 and pin 2 of the resistor R49 are connected to ground; pin 2 of the resistor R31, pin 1 of the capacitor C23 and the positive electrode of the polar capacitor C22 are all connected to pin 7 of the motherboard U1; the negative electrode of the polar capacitor C22, pin 2 of the capacitor C23, the positive electrode of the voltage regulator diode D17, the positive electrode of the resistor R31, the positive electrode of the capacitor C22, the positive electrode of the capacitor C22, the positive electrode of the capacitor C23, the positive electrode of the capacitor C2 ... Pin 2 of the resistor R38 is connected to the negative electrode of the polar capacitor C24 and then grounded; Pin 1 of the resistor R31 is connected to the negative electrode of the diode D10, the negative electrode of the diode D11, the negative electrode of the voltage stabilizing diode D17, Pin 1 of the resistor R38 and the positive electrode of the polar capacitor C24 are all connected to the positive electrode of the diode D10, the positive electrode of the diode D11 is connected to Pin 1 of the resistor R29, and Pin 2 of the resistor R29 is connected to the DC-to-DC circuit; The DC to DC circuit includes a mainboard U2, a capacitor C29, a diode D18, a voltage stabilizing diode D15, a diode D12, a resistor R25, a polar capacitor C14, a resistor R30, a diode D16, a diode D19, a resistor R14, a capacitor C17, a resistor R30, a diode D16, a diode D19, a resistor R41, a capacitor C30, a capacitor C25, a resistor R26, a resistor R48, a resistor R42, a resistor R43, a sliding rheostat R28, a resistor R32, a capacitor C9, a polar capacitor C10, a resistor R6, a transformer L2, a capacitor C6, a diode D3, a diode D5, a resistor R7, a resistor R5, a polar capacitor C7, a polar capacitor C8, a voltage stabilizing diode D7, a resistor R8, a capacitor C11, a resistor R12 and a resistor R19; Pin 1 of the capacitor C29 is grounded, pin 2 of the capacitor C29, pin 2 of the resistor R40, the cathode of the diode D18 and pin 2 of the capacitor C21 are connected and then grounded, the anode of the diode D18 is connected to the anode of the voltage-stabilizing diode D15, the anode of the diode D12 is connected to pin 2 of the resistor R19 and then grounded; the cathode of the diode D12, the cathode of the voltage-stabilizing diode D15, pin 1 of the capacitor C12, pin 8 of the motherboard U2, pin 1 of the resistor R25 and the polarity The positive electrode of the capacitor C14 is connected to the POWRER end of the LDO circuit, and the 2nd pin of the resistor R54 and the 2nd pin of the resistor R56 are connected to the POWRER end of the LDO circuit; the 2nd pin of the resistor R25 is connected to the 1st pin of the optical coupler sensor U4; the 2nd pin of the capacitor C17 and the 1st pin of the resistor R30 are both connected to the 7th pin of the mainboard U2, the 1st pin of the capacitor C17 is connected to the 1st pin of the resistor R26, and the 2nd pin of the resistor R26 is connected to the 6th pin of the mainboard U2;Pin 2 of the resistor R30 is connected to the cathode of the diode D16, the anode of the diode D16 and the anode of the diode D19 are both connected to pin 2 of the optocoupler sensor U4, the cathode of the diode D19 is connected to pin 2 of the resistor R41, pin 1 of the resistor R41, pin 1 of the capacitor C30, pin 1 of the capacitor C25 are connected to pin 1 of the motherboard U2, pin 2 of the capacitor C25 is connected to pin 2 of the resistor R48, pin 2 of the capacitor C30, pin 1 of the resistor R48, pin 2 of the resistor R42 and Pin 2 of the resistor R43 is connected to pin 2 of the main board U2, pin 3 of the main board U2 is connected to pin 20 of the main board U5, pin 4 of the main board U2 is connected to pin 1 of the resistor R42 and then grounded, pin 5 of the main board U2 is connected to pin 2 of the sliding rheostat R28, pin 1 of the sliding rheostat R28 is grounded, pin 1 of the resistor R43 is connected to pin 2 of the resistor R32, pin 2 of the transformer L2, pin 1 of the capacitor C9, pin 1 of the resistor R32, the positive electrode of the polarity capacitor C10 and the resistor R6 The 1st pin of the transformer L2 is connected to the positive electrode of the output, the 4th pin of the transformer L2, the 2nd pin of the capacitor C9, the negative electrode of the polar capacitor C10 and the 2nd pin of the resistor R6 are connected to the negative electrode of the output, the 1st pin of the capacitor C6, the positive electrode of the diode D3 and the positive electrode of the diode D5 are connected to the transformer T1, the 2nd pin of the capacitor C6 is connected to the 1st pin of the resistor R7, the negative electrode of the diode D3, the negative electrode of the diode D5, the 2nd pin of the resistor R7, the 1st pin of the resistor R5, the positive electrode of the polar capacitor C7, the voltage regulator diode The negative electrode of the pole tube D7 and the positive electrode of the polar capacitor C8 are connected to the 1st pin of the transformer L2, the positive electrode of the voltage stabilizing diode D17 is connected to the 1st pin of the resistor R19, the transformer T1, the negative electrode of the polar capacitor C7, the negative electrode of the polar capacitor C8, the 1st pin of the resistor R8, the 1st pin of the capacitor C11 and the negative electrode of the polar capacitor C14 are connected and then grounded, the 3rd pin of the capacitor C11 and the 2nd pin of the resistor R12 are connected, the 2nd pin of the resistor R8 and the 1st pin of the resistor R12 are connected to the 3rd pin of the transformer L2.;

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