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Single-chip switching power supply of air conditioner controller based on field effect drive circuit

An air conditioner controller and drive circuit technology, applied in the field of electronics, can solve the problems of unstable output voltage and current, unstable relay pickup, affecting the service life of air conditioners, etc., so as to maintain stable voltage, ensure stability, and improve service life. Effect

Inactive Publication Date: 2016-11-09
CHENGDU ANGDIJIA TECH CO LTD
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

However, the output voltage of this low-frequency linear power supply has not been stabilized, so the output voltage and current will be unstable due to the fluctuation of the input mains voltage, which will cause the relay in the air-conditioning controller to be unstable and affect the This affects the reliability of the air conditioner, and also seriously affects the service life of the air conditioner

Method used

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  • Single-chip switching power supply of air conditioner controller based on field effect drive circuit
  • Single-chip switching power supply of air conditioner controller based on field effect drive circuit

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Embodiment

[0018] Such as figure 1 As shown, the present invention is mainly composed of the control chip U2, the diode rectifier U1, the transformer T, the field effect transistor MOS1, the P pole is connected with the NC1 pin of the control chip U2, and the N pole is connected with the negative output terminal of the diode rectifier U1 after the resistor R2 Connected diode D1, one end is connected to the drain of the field effect transistor MOS1, the other end is connected to the NC2 pin of the control chip U2. The resistor R7, the negative pole is connected to the drain of the field effect transistor MOS1, and the positive pole is connected to the control chip The polar capacitor C5 connected to the NC3 pin of U2, the active band-pass filter circuit connected to the inductance coil on the primary side of the transformer T, the control chip U2 and the diode rectifier U1 respectively, is connected in series between the control chip U2 and the secondary side of the transformer T It consi...

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Abstract

The invention discloses a single-chip switching power supply for an air conditioner controller based on a field effect drive circuit, which is characterized in that it mainly consists of a control chip U2, a diode rectifier U1, a transformer T, a field effect transistor MOS1, a diode D1, a resistor R7, a polarity The capacitor C5 is composed of an active band-pass filter circuit, a photoelectric coupling switch circuit connected in series between the control chip U2 and the secondary inductance coil of the transformer T, and a field effect drive circuit connected with the photoelectric coupling switch circuit. The invention can effectively adjust the fluctuation of the input voltage and keep the voltage stable, and the invention can adjust the band-pass voltage to make the output voltage consistent with the reference voltage, thus ensuring the stable output voltage of the invention, effective Ensure the stability of the relay pull-in.

Description

technical field [0001] The invention relates to the field of electronics, in particular to a single-chip switching power supply for an air conditioner controller based on a field effect drive circuit. Background technique [0002] At present, most of the power supplies of household air conditioner controllers still use low-frequency iron-core transformers to rectify through diodes, and directly output low-frequency linear power supplies with a voltage of 12 volts after being filtered by capacitors. The 12-volt voltage output by the low-frequency linear power supply supplies power to the wire pack of the relay in the air-conditioning controller. However, the output voltage of this low-frequency linear power supply has not been stabilized, so the output voltage and current will be unstable due to the fluctuation of the input mains voltage, which will cause the relay in the air-conditioning controller to be unstable and affect the This affects the reliability of the air condit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/335
CPCH02M3/33523
Inventor 不公告发明人
Owner CHENGDU ANGDIJIA TECH CO LTD
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