US Patent Application 18202908. AC-VOLTAGE SENSOR CIRCUIT, PFC CIRCUIT, AND POWER SUPPLY CIRCUIT simplified abstract

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AC-VOLTAGE SENSOR CIRCUIT, PFC CIRCUIT, AND POWER SUPPLY CIRCUIT

Organization Name

SHARP KABUSHIKI KAISHA

Inventor(s)

TAKESHI Shiomi of Sakai City (JP)

KENTARO Kishira of Sakai City (JP)

AC-VOLTAGE SENSOR CIRCUIT, PFC CIRCUIT, AND POWER SUPPLY CIRCUIT - A simplified explanation of the abstract

This abstract first appeared for US patent application 18202908 titled 'AC-VOLTAGE SENSOR CIRCUIT, PFC CIRCUIT, AND POWER SUPPLY CIRCUIT

Simplified Explanation

The patent application describes an AC-voltage sensor circuit that is connected to an AC input unit of a PFC (Power Factor Correction) circuit. The AC-voltage sensor circuit includes a sense-signal isolation circuit and is used to measure the voltage difference between two power supply lines.

  • The patent application is for an AC-voltage sensor circuit connected to a PFC circuit.
  • The AC-voltage sensor circuit includes a sense-signal isolation circuit.
  • The PFC circuit and a control circuit are isolation-connected.
  • The AC-voltage sensor circuit is used to measure the voltage difference between two power supply lines.
  • The AC-voltage sensor circuit outputs a signal indicating the voltage difference for a reference-voltage node in the PFC circuit.


Original Abstract Submitted

An AC-voltage sensor circuit is connected to an AC input unit of a PFC circuit. A control circuit and the PFC circuit are isolation-connected. The AC-voltage sensor circuit includes a sense-signal isolation circuit. The PFC circuit and the control circuit are isolation-connected together by the AC-voltage sensor circuit. The AC input unit includes a first line and a second line that are power supply lines. The PFC circuit includes a reference-voltage node. The AC-voltage sensor circuit is configured to output a signal indicating a voltage difference between a “voltage of the first line for the reference-voltage node” and a “voltage of the second line for the reference-voltage node”.

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