Output driver circuit with free-switchable output

Details Output driver circuit with free-switchable output Output driver circuit with free-switchable output

1994-03-28

1995-12-12

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

With specific source of supply or bias voltage

327108, 327365, H02J 100

Patent

active

054753341

ABSTRACT:
The present invention relates to an output driver circuit and in particular, an analog output driver circuit. Up to now, relays have been used in such driver circuits for the switching the outputs from output terminals (e.g., to ground) in the event of surges in the supply voltage. In accordance with the present invention, the relay is replaced by an electronic output switch element which has, free of control, a well-defined switch behavior. The output switch element is preferably a self-conducting field-effect transistor one connection of which is connected to the output line while its other connection is connected to ground.

REFERENCES:
patent: 3870905 (1975-03-01), Chikazawa
patent: 4296340 (1981-10-01), Horan
patent: 4677313 (1987-01-01), Mimoto

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