Pulse output circuit

Details Pulse output circuit Pulse output circuit

1998-09-17

1999-09-14

Elms, Richard T.

Electrical transmission or interconnection systems

Wave form or wave shape determinative or pulse-producing...

327374, 327112, 327488, 327491, H03K 300, H03K 1704, H03K 1760

Patent

active

059527366

ABSTRACT:
A pulse output circuit which has an output stage connected to a capacitive load capable of improving a through-rate of an input pulse signal with reduced power consumption is provided. A circuit having a first transistor which is supplied with a base current at its base in accordance with an input pulse signal from an input terminal, which is supplied with a power source voltage at the collector, which has an emitter connected to the output terminal, and which supplies current to a capacitive load; a third transistor which has a collector connected to the emitter of the first transistor and which has an emitter which is grounded; a bias means which supplies a predetermined base current to the base of the third transistor to make it conductive; and a differentiating circuit which outputs a signal to reduce the base current of the second transistor at the rising edge of the pulse to make it non-conductive and to increase the base current of the second transistor at the trailing edge of the pulse to increase the current.

REFERENCES:
patent: 4733153 (1988-03-01), Katzenstein
patent: 4874970 (1989-10-01), Coy et al.
patent: 5414382 (1995-05-01), Larson et al.
patent: 5550501 (1996-07-01), Ito et al.

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