| 摘要 |
<p>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 currentconducting state as soon as the voltage drop across it exceeds a predetermined threshold value. No separate power supply is required.</p> |
