Circuit arrangement for monitoring a thyristor

Details Circuit arrangement for monitoring a thyristor Circuit arrangement for monitoring a thyristor

H - Electricity

02

M

324/58

H02M 1/08 (2006.01) H02M 1/092 (2006.01)

Patent

CA 1235745

ABSTRACT OF THE DISCLOSURE Disclosed is a circuit arrangement for monitoring a thyristor via a signal transmitting device which is connected on its input side in shunt with the thyristor and to the output of which a light emitting diode is connected for sending light signals to an evaluating device. To obtain a particularly simple and therefore operationally reliable design of such a circuit arrangement, and to achieve the emission of light signals with particulary high light output, the signal transmitting device contains a rectifier arrangement followed by an integrating stage, followed in turn by a threshold voltage switch which changes to a current- conducting state as soon as the voltage drop across it exceeds a predetermined threshold value. No separate power supply is required.

483967

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