Voltage detection and regulation circuit

Abstract

The utility model particularly relates to a voltage detection regulating circuit, which comprises a bridge rectifier DB1, a transformer T1, a control chip IC1 and a key board SW, an output end of the bridge rectifier DB1 is connected to the transformer T1, a common end between the bridge rectifier DB1 and the transformer T1 is connected with a third resistor R3, the third resistor R3 is connected to a first pin of the control chip IC1, and the key board SW is connected to a second pin of the control chip IC1. A pin 1 of the bridge rectifier DB1 is connected with a pin 2 of the control chip IC1, the first diode D1 is connected with a pin 3 of the control chip IC1, the control chip IC1 is respectively connected with a first triode Q1, a second triode Q2, a third triode Q3 and a fourth triode Q4, a pin 4 of the control chip IC1 is connected with a display screen LCD, and a pin 5 and a pin 6 of the control chip IC1 are respectively connected with a keyboard SW. The beneficial effects of the utility model are that the key board SW inputs a voltage adjusting operation instruction to the control chip IC1, and the control chip IC1 displays the voltage value of the display screen LCD, thereby facilitating the observation of the voltage value and the adjustment of the voltage.

Description

TECHNICAL FIELD

[0001] The utility model relates to a voltage detection adjusting circuit. BACKGROUND

[0002] The low-frequency transformer detection circuit is used to determine the mains voltage value by detecting the output voltage of the transformer, but the standby power consumption of the low-frequency transformer is relatively large, the conversion efficiency is low, and the material cost is high. With the requirement of the national standard for the standby power consumption of the electric appliance, the original low-frequency transformer cannot meet the requirement of the national standard for low power consumption. The use of the switching power supply to replace the low-frequency transformer for power supply is the trend. The control system of the switching power supply cannot detect the mains voltage value like the low-frequency transformer, so the following detection circuit is used to solve the demand for detecting the mains voltage in the system of the switching power supply in reality. In addition, the adjusted voltage value cannot be adjusted, and the current voltage value cannot be directly displayed. SUMMARY

[0003] The utility model aims at at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a voltage detection adjusting circuit, which is used to solve the demand for detecting the mains voltage in the system of the switching power supply in reality, and is convenient for observing the voltage value, adjusting the voltage, and operating from far and near.

[0004] According to the voltage detection adjusting circuit, the output end of the rectifier bridge stack DB1 is connected to the transformer T1, the control chip IC1 and the key plate SW are further included, the common end between the rectifier bridge stack DB1 and the transformer T1 is connected with the third resistor R3, the third resistor R3 is connected to the 1 pin of the control chip IC1, the 1 pin of the rectifier bridge stack DB1 is connected to the 2 pin of the control chip IC1, the rectifier bridge stack DB1 is connected with the first resistor R1, the first resistor R1 is connected with the first diode D1, the first diode D1 is connected with the 3 pin of the control chip IC1, the control chip IC1 is respectively connected with the first triode Q1, the second triode Q2, the third triode Q3 and the fourth triode Q4, the collector of the first triode Q1 is connected to the 2 pin of the transformer T1, the collector of the second triode Q2 is connected to the 3 pin of the transformer T1, the collector of the third triode Q3 is connected to the 5 pin of the transformer T1, the collector of the fourth triode Q4 is connected to the 4 pin of the transformer T1, the emitter of the first triode Q1, the emitter of the second triode Q2, the emitter of the third triode Q3 and the emitter of the fourth triode Q4 are connected and the common end is connected with the ground end GND, the 4 pin of the control chip IC1 is connected with the display screen LCD, and the 5 pin and the 6 pin of the control chip IC1 are respectively connected to the key plate SW.

[0005] Specific further, the 7 pin of the control chip IC1 is connected with wireless module U1, and the wireless module U1 is connected with an antenna ANT.

[0006] Specific further, the first resistance R1 and the first diode D1 are connected through the second resistance R2.

[0007] Specific further, the 1 pin and the 2 pin of the rectifier bridge DB1 are connected with an electrolytic capacitor EC1.

[0008] Specific further, the 1 pin of the control chip IC1 is connected with the third resistance R3.

[0009] Specific further, the 11 pin of the control chip IC1 and the base of the first triode Q1 are connected through the fourth resistance R4.

[0010] Specific further, the 10 pin of the control chip IC1 and the base of the second triode Q2 are connected through the fifth resistance R5.

[0011] Specific further, the 9 pin of the control chip IC1 and the base of the third triode Q3 are connected through the sixth resistance R6.

[0012] Specific further, the 8 pin of the control chip IC1 and the base of the fourth triode Q4 are connected through the seventh resistance R7.

[0013] The beneficial effect of the utility model is: this circuit passes through the key plate SW to control chip IC1 input voltage operation instruction of adjusting, control chip IC1 passes through the voltage value of display screen LCD, play convenient observation voltage value and convenient regulation voltage, in addition, the connection of control chip IC1 has wireless module U1, implement wireless input voltage operation instruction, convenient far and near operation. BRIEF DESCRIPTION OF DRAWINGS

[0014] The above and / or additional aspects and advantages of the utility model will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings.

[0015] Figure 1 It is the circuit diagram of the utility model. DETAILED DESCRIPTION

[0016] The embodiments of the utility model will be described in detail below, and the examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model.

[0017] The embodiments of the utility model will be described in detail below, and the examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model. Figure 1The utility model discloses a voltage detection adjusting circuit, including rectifier bridge DB1 and transformer T1, the output of rectifier bridge DB1 is connected on transformer T1, still including control chip IC1 and button board SW, the public end between rectifier bridge DB1 and transformer T1 is connected with third resistance R3, third resistance R3 is connected at the 1 pin of control chip IC1, the 1 pin of rectifier bridge DB1 is connected at the 2 pin of control chip IC1, and rectifier bridge DB1 is connected with first resistance R1, and first resistance R1 is connected with first diode D1, and first diode D1 is connected with the 3 pin of control chip IC1, and control chip IC1 is connected with first triode Q1, second triode Q2, third triode Q3 and fourth triode Q4 respectively, and the collector of first triode Q1 is connected at the 2 pin of transformer T1, and the collector of second triode Q2 is connected at the 3 pin of transformer T1, and the collector of third triode Q3 is connected at the 5 pin of transformer T1, and the collector of fourth triode Q4 is connected at the 4 pin of transformer T1, and the emitter of first triode Q1, the emitter of second triode Q2, the emitter of third triode Q3 and fourth triode Q4 are connected and the public end is connected with ground terminal GND, and the 4 pin of control chip IC1 is connected with display screen LCD, and the 5 pin and 6 pin of control chip IC1 are connected on button board SW respectively.

[0018] The utility model discloses a voltage detection adjusting circuit, including rectifier bridge DB1 and transformer T1, the output of rectifier bridge DB1 is connected on transformer T1, still including control chip IC1 and button board SW, the public end between rectifier bridge DB1 and transformer T1 is connected with third resistance R3, third resistance R3 is connected at the 1 pin of control chip IC1, the 1 pin of rectifier bridge DB1 is connected at the 2 pin of control chip IC1, and rectifier bridge DB1 is connected with first resistance R1, and first resistance R1 is connected with first diode D1, and first diode D1 is connected with the 3 pin of control chip IC1, and control chip IC1 is connected with first triode Q1, second triode Q2, third triode Q3 and fourth triode Q4 respectively, and the collector of first triode Q1 is connected at the 2 pin of transformer T1, and the collector of second triode Q2 is connected at the 3 pin of transformer T1, and the collector of third triode Q3 is connected at the 5 pin of transformer T1, and the collector of fourth triode Q4 is connected at the 4 pin of transformer T1, and the emitter of first triode Q1, the emitter of second triode Q2, the emitter of third triode Q3 and fourth triode Q4 are connected and the public end is connected with ground terminal GND, and the 4 pin of control chip IC1 is connected with display screen LCD, and the 5 pin and 6 pin of control chip IC1 are connected on button board SW respectively.

[0019] Specific further, the 7 pin of control chip IC1 is connected with wireless module U1, and wireless module U1 is connected with antenna ANT, and wireless input voltage operation instruction is implemented, and the second operation mode is provided, and the operation is convenient for near and far.

[0020] Specific further, the first resistance R1 and first diode D1 are connected through the second resistance R2. The second resistance R2 and the first resistance R1 are combined to increase the resistance value.

[0021] Specific further, the 1 pin and the 2 pin of rectifier bridge DB1 are connected with electrolytic capacitor EC1. The electrolytic capacitor EC1 plays a role in voltage stabilization.

[0022] Specific further, the 1 pin of control chip IC1 is connected with third resistance R3. The third resistance R3 plays a role in protecting the control chip IC1.

[0023] Specifically further, the 11th pin of the control chip IC1 is connected with the base of the first triode Q1 through the fourth resistor R4.

[0024] Specifically further, the 10th pin of the control chip IC1 is connected with the base of the second triode Q2 through the fifth resistor R5.

[0025] Specifically further, the 9th pin of the control chip IC1 is connected with the base of the third triode Q3 through the sixth resistor R6.

[0026] Specifically further, the 8th pin of the control chip IC1 is connected with the base of the fourth triode Q4 through the seventh resistor R7.

[0027] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A voltage detection regulating circuit comprising a rectifier bridge stack DB1 and a transformer T1, the output of the rectifier bridge stack DB1 being connected to the transformer T1, characterized in that: The third resistor R3 is connected between the common terminal of the rectifier bridge DB1 and the transformer T1, and the third resistor R3 is connected to the 1 pin of the control chip IC1. The 1 pin of the rectifier bridge DB1 is connected to the 2 pin of the control chip IC1. The rectifier bridge DB1 is connected with the first resistor R1, and the first resistor R1 is connected with the first diode D1. The first diode D1 is connected with the 3 pin of the control chip IC1. The control chip IC1 is connected with the first transistor Q1, the second transistor Q2, the third transistor Q3 and the fourth transistor Q4 respectively. The collector of the first transistor Q1 is connected to the 2 pin of the transformer T1. The collector of the second transistor Q2 is connected to the 3 pin of the transformer T1. The collector of the third transistor Q3 is connected to the 5 pin of the transformer T1. The collector of the fourth transistor Q4 is connected to the 4 pin of the transformer T1. The emitter of the first transistor Q1, the emitter of the second transistor Q2, the emitter of the third transistor Q3 and the emitter of the fourth transistor Q4 are connected together, and the common terminal is connected with the ground terminal GND. The 4 pin of the control chip IC1 is connected with the display screen LCD. The 5 pin and the 6 pin of the control chip IC1 are connected to the key board SW respectively.

2. The voltage detection regulation circuit of claim 1, wherein: The 7 pin of the control chip IC1 is connected with the wireless module U1, and the wireless module U1 is connected with the antenna ANT.

3. The voltage sensing regulation circuit of claim 1, wherein: The first resistor R1 and the first diode D1 are connected through the second resistor R2.

4. The voltage sensing regulation circuit of claim 1, wherein: The 1 pin and the 2 pin of the rectifier bridge DB1 are connected with the electrolytic capacitor EC1.

5. The voltage sensing regulation circuit of claim 1, wherein: The 1 pin of the control chip IC1 is connected with the third resistor R3.

6. The voltage sensing regulation circuit of claim 1, wherein: The 11 pin of the control chip IC1 and the base of the first transistor Q1 are connected through the fourth resistor R4.

7. The voltage sensing regulation circuit of claim 1, wherein: The 10 pin of the control chip IC1 and the base of the second transistor Q2 are connected through the fifth resistor R5.

8. The voltage sensing regulation circuit of claim 1, wherein: The 9 pin of the control chip IC1 and the base of the third transistor Q3 are connected through the sixth resistor R6.

9. The voltage sensing regulation circuit of claim 1, wherein: The 8 pin of the control chip IC1 and the base of the fourth transistor Q4 are connected through the seventh resistor R7.

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