Circuit arrangement for monitoring a thyristor

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

1985-06-10

1987-06-23

Zazworsky, John

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307311, H03K 1772

Patent

active

046755420

ABSTRACT:
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 particularly 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.

REFERENCES:
patent: 3961204 (1976-06-01), Leowald et al.
patent: 4151427 (1979-04-01), Travin
patent: 4229669 (1980-10-01), Smith

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