Power and color temperature adjusting circuit of power switch and LED lamp

Abstract

The utility model provides a power and color temperature adjusting circuit of a power switch and an LED lamp, the circuit comprises a power module, a rectification output circuit, a memory control circuit, a DC-DC constant current circuit, a driving circuit and a lighting circuit, the memory control circuit comprises a signal rectification sub-circuit and a signal control sub-circuit, the signal control sub-circuit comprises a triode, a third resistor, a third capacitor, a follower and a single-chip microcomputer, when the power switch power and color temperature adjusting circuit is powered on, the third capacitor is charged, light emits combined power and color temperature, after the controllable switch is switched off, the third capacitor is discharged, and the controllable switch is switched on within a short time of switching off. And the lamplight emits another combined power and color temperature, and the process is circulated. After the combination of the specified power and the specified color temperature is finally selected to work for a period of time, the single chip microcomputer memorizes the current combination, then the controllable switch is switched off for a period of time, and the specified combination is recovered when the controllable switch is switched on next time, so that frequent switching of light modes is not needed, and the operation is relatively simple and convenient.

Description

Technical Field

[0001] The present disclosure relates to the technical field of lighting, and particularly to a power switch for adjusting power and color temperature circuit and an LED lamp. Background Art

[0002] With the development of LED lighting technology, most of the current LED driving power supply circuits can simultaneously achieve color temperature adjustment and power adjustment to meet the needs of users, so as to be applied to more occasions. For example, existing Chinese patents CN216017206U, CN107846755A, etc. Also, most of them can achieve this function through a power-off detection circuit at the input high-voltage end in cooperation with two DC-DC constant current sources with PWM dimming.

[0003] However, the above circuits do not have a memory function. When the power and color temperature are finally adjusted to the specified state, if the power is disconnected for a period of time and then the LED lamp is started, it will not return to the specified state but become the initial state. Multiple switching operations are required to switch to the specified state, and it takes a relatively long time, which is quite inconvenient to operate. Summary of the Utility Model

[0004] The purpose of the present disclosure is to overcome the deficiencies in the prior art and provide a power switch for adjusting power and color temperature circuit and an LED lamp with simple operation and no need to frequently switch modes.

[0005] The purpose of the present disclosure is achieved by the following technical solutions:

[0006] A power switch for adjusting power and color temperature circuit, comprising:

[0007] A power supply module for connecting to alternating current, and the live wire end of the power supply module is used to connect to a controllable switch;

[0008] A rectifier output circuit, the input end of the rectifier output circuit is connected to one output end of the power supply module;

[0009] A memory control circuit, including a signal rectifier sub-circuit and a signal control sub-circuit. The input end of the signal rectifier sub-circuit is connected to the second output end of the power supply module. The signal control sub-circuit includes a triode, a third resistor, a third capacitor, a follower, and a single-chip microcomputer. The first end of the triode is connected to the output end of the signal rectifier sub-circuit. The second end of the triode is respectively connected to the upper half end of the third capacitor and the positive input end of the follower. The lower half end of the third capacitor is connected to signal ground. The control end of the triode is connected to the control end of the single-chip microcomputer through the third resistor. The acquisition end of the single-chip microcomputer is respectively connected to the output end of the follower and the negative input end of the follower. The first end of the triode, the power connection end of the follower, and the power connection end of the single-chip microcomputer are used to connect to a standard power supply. The ground connection end of the follower and the ground connection end of the single-chip microcomputer are used to connect to signal ground;

[0010] A DC-DC constant current circuit, where the voltage receiving end of the DC-DC constant current circuit is connected to the output end of the rectifying output circuit, and the signal receiving end of the DC-DC constant current circuit is connected to one output end of the single-chip microcomputer;

[0011] A driving circuit, where the signal receiving end of the driving circuit is connected to the other output end of the single-chip microcomputer, and the output end of the driving circuit is connected to the positive output end of the DC-DC constant current circuit;

[0012] A lighting circuit, where the positive output end of the DC-DC constant current circuit is connected to the first end of the lighting circuit, the second end of the lighting circuit is connected to the negative output end of the DC-DC constant current circuit, and the control end of the lighting circuit is connected to the driving end of the driving circuit.

[0013] In one embodiment, the signal control sub-circuit further includes a second resistor, and the first end of the triode is connected to the standard power supply through the second resistor.

[0014] In one embodiment, at least one of the second resistor and the third resistor is a variable resistor.

[0015] In one embodiment, the signal control sub-circuit further includes a first resistor, the first end of the first resistor is connected to the upper half end of the third capacitor, and the second end of the first resistor is connected to the lower half end of the third capacitor.

[0016] In one embodiment, the signal control sub-circuit further includes a fourth capacitor, the upper half end of the fourth capacitor is connected to the power connection end of the follower, and the lower half end of the fourth capacitor is connected to the signal ground.

[0017] In one embodiment, the signal control sub-circuit further includes a second capacitor, the upper half end of the second capacitor is connected to the power connection end of the single-chip microcomputer, and the lower half end of the second capacitor is connected to the signal ground.

[0018] In one embodiment, the lighting circuit includes a first lighting circuit and a second lighting circuit, the positive output end of the DC-DC constant current circuit is respectively connected to the first end of the first lighting circuit and the first end of the second lighting circuit, the negative output end of the DC-DC constant current circuit is respectively connected to the second end of the first lighting circuit and the second end of the second lighting circuit, the control end of the first lighting circuit is connected to one driving end of the driving circuit, and the control end of the second lighting circuit is connected to the other driving end of the driving circuit.

[0019] In one embodiment, the first lighting circuit includes a first light-emitting diode and a first field-effect transistor. The anode of the first light-emitting diode is connected to the positive output terminal of the DC-DC constant-current circuit, the cathode of the first light-emitting diode is connected to the first end of the first field-effect transistor, the control terminal of the first field-effect transistor is connected to one driving end of the driving circuit, and the second end of the first field-effect transistor is connected to the negative output terminal of the DC-DC constant-current circuit.

[0020] In one embodiment, the second lighting circuit includes a second light-emitting diode and a second field-effect transistor. The anode of the second light-emitting diode is connected to the anode of the first light-emitting diode, the cathode of the second light-emitting diode is connected to the first end of the second field-effect transistor, the control terminal of the second field-effect transistor is connected to the second driving end of the driving circuit, and the second end of the second field-effect transistor is connected to the negative output terminal of the DC-DC constant-current circuit.

[0021] An LED lamp includes the power switch for adjusting power and color temperature circuit according to any one of the above embodiments.

[0022] Compared with the prior art, the present disclosure has at least the following advantages:

[0023] When the power switch for adjusting power and color temperature circuit is powered on, the standard power supply supplies power to the follower and the single-chip microcomputer. In the initial state, the single-chip microcomputer detects the voltage at its acquisition terminal and controls the triode to conduct, and then charges the third capacitor. When the voltage is 0, the lamp emits a combination of power and color temperature. After the controllable switch is disconnected, the third capacitor discharges. When the controllable switch is turned on again within a short time after disconnection and the single-chip microcomputer detects that the voltage at its acquisition terminal is greater than 0, the lamp emits another combination of power and color temperature, and this combination is adjusted in sequence. After the combination of the specified power and color temperature is finally selected and works for a period of time, the single-chip microcomputer starts to memorize the current combination, and then disconnects the controllable switch for a period of time. When the controllable switch is turned on next time, the single-chip microcomputer will restore to the specified combination, so that there is no need to frequently switch the lamp mode, and the operation is relatively simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present disclosure, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0025] Figure 1 It is a circuit diagram of the power switch for adjusting power and color temperature circuit in one embodiment.

[0026] Reference numerals: 10, power switch power and color temperature adjustment circuit; 100, power supply module; 200, rectifier output circuit; 300, memory control circuit; 310, commutator circuit; 320, signal control sub-circuit; 400, DC-DC constant current circuit; 500, drive circuit; 600, lighting circuit; 610, first lighting circuit; 620, second lighting circuit; U1, single-chip microcomputer; U2A, follower; Q1, triode; M1, first field effect transistor; M2, second field effect transistor; LED1, first light-emitting diode; LED2, second light-emitting diode; C2, second capacitor; C3, third capacitor; C4, fourth capacitor; R1, first resistor; R2, second resistor; R3, third resistor; SW1, controllable switch. Detailed implementation manners

[0027] To facilitate the understanding of the present disclosure, the present disclosure will be described more comprehensively below with reference to the relevant drawings. Preferred embodiments of the present disclosure are shown in the drawings. However, the present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided so that the understanding of the disclosure content of the present disclosure can be more thorough and comprehensive.

[0028] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may also be a middle element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be a middle element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only embodiments.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which this disclosure belongs. The terms used herein in the specification of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0030] To better understand the technical solutions and beneficial effects of the present disclosure, the present disclosure will be further described in detail below with reference to specific embodiments:

[0031] Please refer to Figure 1 , which is the power switch power and color temperature adjustment circuit 10 of an embodiment of the present utility model, including a power supply module 100, a rectifier output circuit 200, a memory control circuit 300, a DC-DC constant current circuit 400, a drive circuit 500 and a lighting circuit 600.

[0032] The power supply module 100 is used to connect to alternating current, and the live wire terminal of the power supply module 100 is used to connect to the controllable switch SW1.

[0033] The input end of the rectification output circuit 200 is connected to one output end of the power supply module 100, so that the alternating current of the power supply module 100 passes through the transformer T1B and is rectified by the diode D2 to output direct current.

[0034] The memory control circuit 300 includes a signal rectifier circuit 310 and a signal control circuit 320. The input end of the signal rectifier circuit 310 is connected to the second output end of the power supply module 100. The signal control circuit 320 includes a triode Q1, a third resistor R3, a third capacitor C3, a follower U2A and a single-chip microcomputer U1. The first end of the triode Q1 is connected to the output end of the signal rectifier circuit 310. The second end of the triode Q1 is respectively connected to the upper half end of the third capacitor C3 and the positive input end of the follower U2A. The lower half end of the third capacitor C3 is connected to the signal ground. The control end of the triode Q1 is connected to the control end of the single-chip microcomputer U1 through the third resistor R3. The acquisition end of the single-chip microcomputer U1 is respectively connected to the output end of the follower U2A and the negative input end of the follower U2A. The first end of the triode Q1, the power connection end of the follower U2A and the power connection end of the single-chip microcomputer U1 are used to connect to the standard power supply. The ground connection end of the follower U2A and the ground connection end of the single-chip microcomputer U1 are used to connect to the signal ground.

[0035] The voltage receiving end of the DC-DC constant current circuit 400 is connected to the output end of the rectification output circuit 200 to receive the rectified direct current. The signal receiving end of the DC-DC constant current circuit 400 is connected to one output end of the single-chip microcomputer U1. The signal receiving end of the drive circuit 500 is connected to the second output end of the single-chip microcomputer U1. The output end of the drive circuit 500 is connected to the positive output end of the DC-DC constant current circuit 400, so that the single-chip microcomputer U1 outputs a combination of a power adjustment PWM01 wave and a color temperature adjustment PWM02 wave through its one output end and the second output end, and the duty cycles of the two PWM waves are adjustable.

[0036] The positive output terminal of the DC-DC constant current circuit 400 is connected to the first terminal of the lighting circuit 600, the second terminal of the lighting circuit 600 is connected to the negative output terminal of the DC-DC constant current circuit 400, and the control terminal of the lighting circuit 600 is connected to the driving terminal of the driving circuit 500. In this embodiment, the lighting circuit 600 includes a first lighting circuit 610 and a second lighting circuit 620. The positive output terminal of the DC-DC constant current circuit 400 is respectively connected to the first terminal of the first lighting circuit 610 and the first terminal of the second lighting circuit 620, the negative output terminal of the DC-DC constant current circuit 400 is respectively connected to the second terminal of the first lighting circuit 610 and the second terminal of the second lighting circuit 620, the control terminal of the first lighting circuit 610 is connected to one driving terminal of the driving circuit 500, and the control terminal of the second lighting circuit 620 is connected to the other driving terminal of the driving circuit 500. Specifically, in the case of outputting a combination of a power adjustment PWM01 wave and a color temperature adjustment PWM02 wave, the lighting circuit 600 will emit a combination of power and color temperature according to the above combination, and the lighting power and lighting color temperature are adjustable. Among them, the first lighting circuit 610 is a cold light circuit, the second lighting circuit 620 is a warm light circuit, one driving terminal of the driving circuit 500 is used to control the on / off state of the cold light circuit, and the other driving terminal of the driving circuit 500 is used to control the on / off state of the warm light circuit.

[0037] In this embodiment, when the power switch power adjustment color temperature circuit 10 is powered on, the standard power supply supplies power to the follower U2A and the single-chip microcomputer U1. In the initial state, the single-chip microcomputer U1 detects the voltage at its acquisition terminal and controls the triode Q1 to conduct, and then charges the third capacitor C3. When the voltage is 0, the lamp emits a combination of power and color temperature. After disconnecting the controllable switch SW1, the third capacitor C3 discharges. When the controllable switch SW1 is turned on again within a short time after disconnection, when the single-chip microcomputer U1 detects that the voltage at its acquisition terminal is greater than 0, the lamp emits another combination of power and color temperature, and this combination is adjusted in sequence. After the combination of the specified power and color temperature is finally selected and works for a period of time, the single-chip microcomputer U1 starts to memorize the current combination, and then disconnects the controllable switch SW1 for a period of time. When the controllable switch SW1 is turned on next time, the single-chip microcomputer U1 will return to the specified combination, so there is no need to frequently switch the lamp mode, and the operation is relatively simple.

[0038] It can be understood that when the power switch of the power-adjusting and color-temperature-adjusting circuit 10 is powered on, alternating current is output to the rectifying output circuit 200 through a transformer, and then output to the DC-DC constant current circuit 400 after being rectified by the diode D2. At the same time, the alternating current is transformed to the commutator sub-circuit 310 and rectified and output to the signal control sub-circuit 320. At this time, the follower U2A and the single-chip microcomputer U1 are powered on. The follower U2A detects the voltage at its acquisition terminal and records it as the first effective value. Subsequently, the control terminal of the single-chip microcomputer U1 enables a high-level signal to the control terminal of the triode Q1 to conduct, thereby charging the third capacitor C3. When the first effective value is 0, a combination of a power-adjusting PWM01 wave and a color-temperature-adjusting PWM02 wave is output, and the lighting circuit 600 lights up according to the corresponding combined power and color temperature. At this time, the controllable switch SW1 is disconnected, the power supply is de-energized, and the follower U2A and the single-chip microcomputer U1 stop working, and the lamp goes out. At this time, the third capacitor C3 starts to discharge. The controllable switch SW1 is opened within a short time after the controllable switch SW1 is disconnected. The power supply is powered on, and the follower U2A and the single-chip microcomputer U1 work. At this time, the control terminal of the single-chip microcomputer U1 is at a low level, and the third capacitor C3 is in a discharging state. The voltage of the third capacitor C3 is greater than 0, and the voltage output by the follower U2A is also greater than 0. Subsequently, the single-chip microcomputer U1 detects the voltage at its acquisition terminal again, and its control terminal outputs a high level to conduct the triode Q1, so that the third capacitor C3 is charged. When the voltage at the acquisition terminal of the single-chip microcomputer U1 is greater than 0, the combination of the power-adjusting PWM01 wave and the color-temperature-adjusting PWM02 wave stored in the single-chip microcomputer U1 is switched, and the lighting circuit 600 lights up according to another corresponding combined power and color temperature. There are multiple combination modes stored in the single-chip microcomputer U1. When the lamp is powered on, every time the step of disconnecting the controllable switch SW1 and immediately connecting the controllable switch SW1 within a short time is executed, the combination modes of the power-adjusting PWM01 wave and the color-temperature-adjusting PWM02 wave can be sequentially cycled. When a combination mode is finally selected, after working for a certain period of time, the single-chip microcomputer U1 starts to memorize the current combination mode, and then disconnects the controllable switch SW1. After a period of time of disconnecting the controllable switch SW1, when the controllable switch SW1 is turned on next time, if the single-chip microcomputer U1 detects that the voltage at its acquisition terminal is equal to 0, it returns to the finally selected combination mode, so that there is no need to switch modes multiple times, and the operation is relatively simple. Specifically, the time threshold for the single-chip microcomputer U1 to start memorizing in the working state of the lamp is 3 seconds. If the lamp works in a recently selected combination mode for more than 3 seconds, the single-chip microcomputer U1 starts to memorize the current mode.

[0039] Further, the follower U2A is used to follow the voltage of the third capacitor C3 and then connect it to the acquisition terminal of the single-chip microcomputer U1. The triode Q1 is an NPN-type triode, with its first end being the collector, the second end being the emitter, and the control end being the base. The single-chip microcomputer U1 is a single-chip microcomputer with a memory function. In the case of using a single-chip microcomputer with a memory function, the single-chip microcomputer can not only switch or restore a combination of a power-adjusting PWM01 wave and a color-temperature-adjusting PWM02 wave according to the voltage magnitude of its own acquisition terminal, but also record the last selected combination mode when the lamp works for a period of time, so that when the controllable switch SW1 is turned on next time and the single-chip microcomputer detects that the voltage of its acquisition terminal is equal to 0, it can be restored to the selected combination mode without having to switch the mode from the original state.

[0040] In one embodiment, the signal control sub-circuit 320 further includes a second resistor R2. The first end of the triode Q1 is connected to the standard power supply through the second resistor R2. It can be understood that the second resistor R2 is connected in series with the first end of the triode Q1 to further protect the triode Q1 in cooperation with the third resistor R3, reduce the possibility of the triode Q1 being broken down due to excessive current caused by too low resistance, and ensure that the triode Q1 can be normally turned on or off.

[0041] Further, at least one of the second resistor R2 and the third resistor R3 is a variable resistor. In this embodiment, when one or both of the second resistor R2 and the third resistor R3 are variable resistors, the resistance value of one or both of the second resistor R2 and the third resistor R3 can be adjusted to adjust the resistance ratio of the second resistor R2 to the third resistor R3, thereby adjusting the conduction condition of the triode Q1 and ensuring the normal conduction or cut-off of the triode Q1 to adapt to more models of the triode Q1.

[0042] In one embodiment, the signal control sub-circuit 320 further includes a first resistor R1. The first end of the first resistor R1 is connected to the upper half of the third capacitor C3, and the second end of the first resistor R1 is connected to the lower half of the third capacitor C3. It can be understood that the first resistor R1 and the third capacitor C3 are connected in parallel to form a resistor-capacitor (RC) circuit, which can be used to filter the voltage at the second end of the triode Q1 in the conduction state and ensure that the input voltage of the follower U2A does not fluctuate greatly.

[0043] In one embodiment, the signal control sub - circuit 320 further includes a fourth capacitor C4. The upper end of the fourth capacitor C4 is connected to the power supply terminal of the follower U2A, and the lower end of the fourth capacitor C4 is connected to the signal ground, so that the voltage of the power supply terminal of the follower U2A can be filtered. At the same time, the fourth capacitor C4 can also play a voltage - stabilizing role, avoiding the situation that the follower U2A is damaged due to voltage mutation, and ensuring the normal operation of the follower U2A. In addition, the signal control sub - circuit 320 further includes a second capacitor C2. The upper end of the second capacitor C2 is connected to the power supply terminal of the single - chip microcomputer U1, and the lower end of the second capacitor C2 is connected to the signal ground, so that the voltage of the power supply terminal of the single - chip microcomputer U1 can be filtered. At the same time, the second capacitor C2 can also play a voltage - stabilizing role, avoiding the situation that the single - chip microcomputer U1 is damaged due to voltage mutation, and ensuring the normal operation of the single - chip microcomputer U1.

[0044] In one embodiment, the first lighting circuit 610 includes a first light - emitting diode LED1 and a first field - effect transistor M1. The anode of the first light - emitting diode LED1 is connected to the positive output terminal of the DC - DC constant - current circuit 400, the cathode of the first light - emitting diode LED1 is connected to the first end of the first field - effect transistor M1, the control terminal of the first field - effect transistor M1 is connected to one driving end of the driving circuit 500, and the second end of the first field - effect transistor M1 is connected to the negative output terminal of the DC - DC constant - current circuit 400; the second lighting circuit 620 includes a second light - emitting diode LED2 and a second field - effect transistor M2. The anode of the second light - emitting diode LED2 is connected to the anode of the first light - emitting diode LED1, the cathode of the second light - emitting diode LED2 is connected to the first end of the second field - effect transistor M2, the control terminal of the second field - effect transistor M2 is connected to the second driving end of the driving circuit 500, and the second end of the second field - effect transistor M2 is connected to the negative output terminal of the DC - DC constant - current circuit 400. Among them, the first light - emitting diode LED1 is a cold - color light - emitting diode, the second light - emitting diode LED2 is a warm - color light - emitting diode, the driving end of the driving circuit 500 is used to adjust the color temperature and power state of the cold - color light - emitting diode by controlling the switching state of the first field - effect transistor M1, and the second driving end of the driving circuit 500 is used to adjust the color temperature and power state of the warm - color light - emitting diode by controlling the switching state of the second field - effect transistor M2.

[0045] In this embodiment, both the first field - effect transistor M1 and the second field - effect transistor M2 are N - type MOS transistors. The first end of the first field - effect transistor M1 is the drain, the second end is the source, and the control terminal is the gate; the first end of the second field - effect transistor M2 is the drain, the second end is the source, and the control terminal is the gate.

[0046] The present disclosure also provides an LED lamp, including the power - switch - adjusted power and color - temperature circuit 10 of any of the above embodiments.

[0047] Compared with the prior art, the present disclosure has at least the following advantages:

[0048] When the power switch adjusts the power and color temperature circuit 10 is powered on, the standard power supply supplies power to the follower U2A and the single-chip microcomputer U1. In the initial state, the single-chip microcomputer U1 detects the voltage at its acquisition terminal and controls the triode Q1 to conduct, and then charges the third capacitor C3. When the voltage is 0, the lamp emits a combination of power and color temperature. After disconnecting the controllable switch SW1, the third capacitor C3 discharges. When the controllable switch SW1 is turned on again within a short time after disconnection, when the single-chip microcomputer U1 detects that the voltage at its acquisition terminal is greater than 0, the lamp emits another combination of power and color temperature, and this combination is adjusted in sequence and cyclically. After working for a period of time with the finally selected combination of specified power and color temperature, the single-chip microcomputer U1 starts to memorize the current combination, and then disconnects the controllable switch SW1 for a period of time. When the controllable switch SW1 is turned on next time, the single-chip microcomputer U1 will restore to the specified combination, so there is no need to frequently switch the lamp mode, and the operation is relatively simple.

[0049] The above-described embodiments merely represent several implementation manners of the present disclosure. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the disclosed patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present disclosure, several deformations and improvements can still be made, and these all belong to the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure patent shall be subject to the appended claims.

Claims

1. A power switch power and color temperature adjustment circuit, characterized in that: include: A power module, used to connect to AC power, and a live wire end of the power module is used to connect to a controllable switch; A rectifier output circuit, wherein an input end of the rectifier output circuit is connected to an output end of the power module; A memory control circuit comprises a signal rectifier circuit and a signal control subcircuit, wherein the input end of the signal rectifier circuit is connected to the output two ends of the power module, the signal control subcircuit comprises a transistor, a third resistor, a third capacitor, a follower and a single-chip microcomputer, the first end of the transistor is connected to the output end of the signal rectifier circuit, the second end of the transistor is respectively connected to the upper half end of the third capacitor and the input positive end of the follower, the lower half end of the third capacitor is connected to the signal ground, the control end of the transistor is connected to the control end of the single-chip microcomputer through the third resistor, the collection end of the single-chip microcomputer is respectively connected to the output end of the follower and the input negative end of the follower, the first end of the transistor, the power connection end of the follower and the power connection end of the single-chip microcomputer are used to connect to a standard power supply, and the ground end of the follower and the ground end of the single-chip microcomputer are used to connect to a signal ground; A DC-DC constant current circuit, wherein a voltage receiving terminal of the DC-DC constant current circuit is connected to an output terminal of the rectifier output circuit, and a signal receiving terminal of the DC-DC constant current circuit is connected to an output terminal of the single chip microcomputer; A driving circuit, wherein a signal receiving terminal of the driving circuit is connected to two output terminals of the single chip microcomputer, and an output terminal of the driving circuit is connected to a positive output terminal of the DC-DC constant current circuit; A lighting circuit, wherein the output positive terminal of the DC-DC constant current circuit is connected to the first terminal of the lighting circuit, the second terminal of the lighting circuit is connected to the output negative terminal of the DC-DC constant current circuit, and the control terminal of the lighting circuit is connected to the driving terminal of the driving circuit.

2. The power switch power and color temperature adjustment circuit according to claim 1, characterized in that: The signal control subcircuit further includes a second resistor, and the first end of the transistor is connected to a standard power supply through the second resistor.

3. The power switch power and color temperature adjustment circuit according to claim 2, characterized in that: At least one of the second resistor and the third resistor is a variable resistor.

4. The power switch power and color temperature adjustment circuit according to claim 1, characterized in that: The signal control subcircuit further includes a first resistor, a first end of the first resistor is connected to an upper half end of the third capacitor, and a second end of the first resistor is connected to a lower half end of the third capacitor.

5. The power switch power and color temperature adjustment circuit according to claim 1, characterized in that: The signal control subcircuit further includes a fourth capacitor, an upper half of the fourth capacitor is connected to the power terminal of the follower, and a lower half of the fourth capacitor is connected to the signal ground.

6. The power switch power and color temperature adjustment circuit according to claim 1, characterized in that: The signal control subcircuit further includes a second capacitor, an upper end of the second capacitor is connected to the power terminal of the single chip computer, and a lower end of the second capacitor is connected to the signal ground.

7. The power switch power and color temperature adjustment circuit according to claim 1, characterized in that: The lighting circuit includes a first lighting circuit and a second lighting circuit. The output positive end of the DC-DC constant current circuit is connected to the first end of the first lighting circuit and the first end of the second lighting circuit respectively, and the output negative end of the DC-DC constant current circuit is connected to the second end of the first lighting circuit and the second end of the second lighting circuit respectively. The control end of the first lighting circuit is connected to the driving end of the driving circuit, and the control end of the second lighting circuit is connected to the driving end of the driving circuit.

8. The power switch power and color temperature adjustment circuit according to claim 7, characterized in that: The first lighting circuit includes a first light-emitting tube and a first field effect tube, wherein the anode of the first light-emitting tube is connected to the positive output terminal of the DC-DC constant current circuit, the cathode of the first light-emitting tube is connected to the first terminal of the first field effect tube, the control terminal of the first field effect tube is connected to the driving terminal of the driving circuit, and the second terminal of the first field effect tube is connected to the negative output terminal of the DC-DC constant current circuit.

9. The power switch power and color temperature adjustment circuit according to claim 8, characterized in that: The second lighting circuit includes a second light-emitting tube and a second field effect tube, the anode of the second light-emitting tube is connected to the anode of the first light-emitting tube, the cathode of the second light-emitting tube is connected to the first end of the second field effect tube, the control end of the second field effect tube is connected to the second driving end of the driving circuit, and the second end of the second field effect tube is connected to the output negative end of the DC-DC constant current circuit.

10. An LED lamp, characterized in that: The invention comprises the power switch power and color temperature adjusting circuit as described in any one of claims 1 to 9.

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