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Filtering protection circuit for voltage detection of power socket of refrigerator

A power socket and voltage detection technology, applied in electrical components, output power conversion devices, etc., can solve the problems of complex circuit structure, inconvenient inspection and maintenance, and high cost, and achieve stable output current, easy inspection and maintenance, and stable signals. Effect

Inactive Publication Date: 2018-02-16
CHENGDU CHUANGTU TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the power outlet protection circuit of the refrigerator currently in use usually needs to use electronic components such as transformers and integrated chips, which not only makes the circuit structure complicated, it is not easy to check and maintain; it also makes its cost relatively high

Method used

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  • Filtering protection circuit for voltage detection of power socket of refrigerator
  • Filtering protection circuit for voltage detection of power socket of refrigerator

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Embodiment

[0020] Such as figure 1 As shown, the refrigerator power socket voltage detection filter protection circuit of the present invention is mainly composed of a front constant current source circuit, a triode VT1, a triode VT2, a triode VT3, a triode VT4, an operational amplifier P1, a light-emitting diode VD, a bidirectional thyristor VS, Fuse FU, resistor R1, resistor R2, resistor R3, resistor R4, resistor R5, resistor R6, resistor R7, resistor R8, resistor R9, resistor R10, capacitor C1, capacitor C2, capacitor C3, capacitor C4, capacitor C5, capacitor C6, capacitor C7, capacitor C8, diode D1, diode D2, diode D3, diode D4, diode D5 and Zener diode D6. Wherein, the resistor R1 is 800KΩ, the resistors R2 and R3 are 25KΩ, the resistors R4-R7 are 20KΩ, the resistors R8 and R9 are 30KΩ, and the resistor R10 is 50KΩ. At the same time, the capacitance of the capacitor C1 is 0.68 μF, the capacitances of the capacitors C2 and C3 are 100 μF, the capacitances of the capacitors C4-C6 are ...

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Abstract

The invention discloses a refrigerator power socket voltage detection filter protection circuit, which is characterized in that it mainly consists of a front constant current source circuit, triodes VT1-VT4, operational amplifier P1, light emitting diode VD, bidirectional thyristor VS, fuse FU , Resistors R1 ~ R10, capacitors C1 ~ C8, diodes D1 ~ D5 and Zener diode D6. The present invention does not need to use complex and costly electronic components such as transformers and integrated chips, so that the structure of the present invention is relatively simple, which can facilitate inspection and maintenance, and can reduce costs; at the same time, it can also avoid sudden power failure and power on immediately start compression The machine will damage the compressor, which is suitable for popularization and application.

Description

technical field [0001] The invention relates to a protection circuit, in particular to a refrigerator power socket voltage detection filter type protection circuit. Background technique [0002] At present, the refrigerator has become an indispensable household appliance in family life, and the compressor used in the refrigerator is the soul part of the refrigerator. When using a refrigerator, if the power comes back on immediately after a power outage, it will be easier to damage the compressor, and even burn the compressor if it is serious. Therefore, the compressor is usually protected by setting a protective circuit in the power outlet of the refrigerator to prevent the power from being turned on again within 5 minutes after a sudden power failure. [0003] However, the power outlet protection circuit of the refrigerator currently used usually needs to use electronic components such as transformers and integrated chips, which not only makes the circuit structure complic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M1/14H02M1/36
CPCH02M1/14H02M1/36
Inventor 周云扬
Owner CHENGDU CHUANGTU TECH
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