Universal input circuit including opto-isolator and retriggerabl

Details Universal input circuit including opto-isolator and retriggerabl Universal input circuit including opto-isolator and retriggerabl

1996-09-04

1998-08-04

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Amplitude control

327319, 327514, H03L 500

Patent

active

057899606

ABSTRACT:
A universal input circuit which responds to a wider range of input voltages by eliminating the problem of heat dissipation in the input section of the circuit. The universal input circuit includes an input section and an output section connected by an opto-isolator for electrically isolating the input section from the output section. The input section of the universal input circuit is configured to turn on in response to an in-range DC input voltage activating the opto-isolator to produce a signal which drives the output section of the universal input circuit. A retriggerable, monostable, multivibrator is included in the output section of the universal input circuit which supplies an output in response to an in-range AC input voltage.

REFERENCES:
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patent: 4507571 (1985-03-01), Callan
patent: 4539480 (1985-09-01), Artinano et al.
patent: 4739174 (1988-04-01), Nagano
patent: 5068545 (1991-11-01), Molnar
patent: 5111070 (1992-05-01), Murphy et al.
patent: 5270577 (1993-12-01), Yamaguchi et al.
patent: 5457591 (1995-10-01), Mock et al.

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