DRIVE CIRCUIT

DRIVE CIRCUIT

A drive circuit is provided. When the switching element is in turn-on state and a collector-emitter voltage of the switching element is equal to or higher than a first predetermined voltage value, the first diode is turned on; the first transistor and the second transistor are turned on; and, after...

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Hauptverfasser: Ogawa, Hiroo, Yoshino, Tomohiko, Shibata, Hisashi
Format: Patent
Sprache:eng
Schlagworte:
BASIC ELECTRONIC CIRCUITRY
ELECTRICITY
PULSE TECHNIQUE
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creator Ogawa, Hiroo
Yoshino, Tomohiko
Shibata, Hisashi
description A drive circuit is provided. When the switching element is in turn-on state and a collector-emitter voltage of the switching element is equal to or higher than a first predetermined voltage value, the first diode is turned on; the first transistor and the second transistor are turned on; and, after a mask time in which a first capacitor is started to be charged with a current from a current source and a voltage value at two ends becomes equal to or higher than a second predetermined voltage value higher than the first predetermined voltage value, an abnormality detection signal is output to the control unit. The control unit stops an output of the pulse signal to the switching element in response to the abnormality detection signal.
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subjects BASIC ELECTRONIC CIRCUITRY
ELECTRICITY
PULSE TECHNIQUE
title DRIVE CIRCUIT
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