SCHALTUNGSANORDNUNG ZUR BEGRENZUNG DER EINSCHALTSTROMSPITZEN BEI EINEM SCHALTTRANSISTOR.

摘要

The transient limiting circuit, for a switching transistor (T) supplied with rectangular switching pulses of equal amplitude, uses a coil (PW), in one of the leads for the switching transistor, through which the working current is passed. Then self-induction voltage in the coil acts in opposition to the control voltage of the switching transistor. The self inductance of the coil provides an effective reduction of the control voltage only at the peak of the switching current transient. Pref. a demagnetisation diode (DE1) is connected in parallel with the series coil. The latter pref. comprises the primary coil of a current transotransformer (STW) with a resistive load (RB1) and a rectifier diode (GR2) in the transformer secondary circuit.