Circuit for limiting the short circuit output current

Details Circuit for limiting the short circuit output current Circuit for limiting the short circuit output current

1989-10-18

1991-09-03

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307458, 307443, 307544, H03K 19088, H03K 19013

Patent

active

050457241

ABSTRACT:
A TTL gate (22) includes a current generating circuit (24) comprising an NPN transistor (30) having its base coupled to a diode (24) and its emitter coupled to one of the gate's output transistors (14). Transistor (30) enables diode (24) to deliver a high current of short duration to the output OUT responsive to a low-to-high output transition. The current provides low-to-high output transition while protecting output transistor (14) from damaging currents caused by a short circuit at output OUT.

REFERENCES:
patent: 4623803 (1986-11-01), Thompson et al.
patent: 4839538 (1989-06-01), Curtis
patent: 4890015 (1989-12-01), Wise

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