Voltage detection and measurement circuit

Voltage detection and measurement circuit

  • CN 102,262,178 A
  • Filed: 05/25/2011
  • Published: 11/30/2011
  • Est. Priority Date: 05/25/2010
  • Status: Active Application
First Claim
Patent Images

1. voltage detecting and metering circuit comprise:

  • First Zener diode, it is configured to operational coupled to the AC power input line;

    Second Zener diode, it is configured to operational coupled to reference voltage line, and wherein, described first and second Zener diodes are configured to transmit part from the input AC voltage of described AC power input line to produce output waveform;

    Photo-coupler, it is coupled to described first and second Zener diodes to receive the described output waveform from described first and second Zener diodes, to detect described input AC voltage;

    AndTreatment circuit, it is configured to receive the described output waveform from described photo-coupler, and existence and/or the size of determining described input AC voltage based on described output waveform.

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