Title:
DISCHARGE CIRCUIT
Document Type and Number:
Japanese Patent JP2022054020
Kind Code:
A
Abstract:
To provide a discharge circuit capable of detecting short-circuit failures.SOLUTION: A discharge circuit comprises: a first resistor whose one end is electrically connected with a high potential side terminal of a capacitor; a first switching element whose first terminal is electrically connected with the other end of the first resistor, whose second terminal receives a control signal that becomes a first level when discharge of the capacitor is to be performed and becomes a second level when discharge of the capacitor is not to be performed, and whose third terminal is electrically connected with a reference potential; a comparator whose first input terminal is applied with a voltage depending on a voltage of the capacitor and whose second input terminal is applied with a threshold voltage, and that outputs a signal based on comparison between the voltage depending on the voltage of the capacitor and the threshold voltage; and a voltage setting circuit that sets a voltage at the first input terminal or the second input terminal of the comparator to a predetermined voltage on the basis of a voltage at the first terminal of the first switching element.SELECTED DRAWING: Figure 3
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Inventors:
ASAMI KAZUHIRO
WAKABAYASHI KOJI
WAKABAYASHI KOJI
Application Number:
JP2020160975A
Publication Date:
April 06, 2022
Filing Date:
September 25, 2020
Export Citation:
Assignee:
SHINDENGEN ELECTRIC MFG
International Classes:
H02M3/00
Attorney, Agent or Firm:
Sakai International Patent Office