Arrangement including a delayed-action semiconductor switch

Details Arrangement including a delayed-action semiconductor switch Arrangement including a delayed-action semiconductor switch

1979-12-06

1982-03-02

Miller, Jr., Stanley D.

Electrical transmission or interconnection systems

Personnel safety or limit control features

Interlock

307255, 307289, 307359, H03K 1760

Patent

active

043180116

ABSTRACT:
In a circuit including a semiconductor switch for switching a load current, the so-called storage time of the semiconductor switch, i.e. the delay occurring during switching from the conductive state to the blocking state, is regulated so as to decrease undesired variation of same, i.e. the storage period is maintained substantially constant. This is achieved in the case, for example, of a transistor in that, dependent on the collector voltage, the control or base current for switching on the transistor, and possibly a reverse base voltage applied to block the transistor, are varied so as to maintain the storage period at a desired value.

REFERENCES:
patent: 3780317 (1973-12-01), Kurata et al.
patent: 4055794 (1977-10-01), Ickes et al.
patent: 4061931 (1977-12-01), Boschert
IBM Tech. Disclre. Bttn., Dynamic Transistor Antisaturation Control, by K. H. Knickmeyer, vol. 17, No. 4, 9/74, pp. 1091 & 1092.

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