Output circuit with optically coupled control signals

Details Output circuit with optically coupled control signals Output circuit with optically coupled control signals

1992-01-27

1993-07-06

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Signal isolator

307311, G02B 2700

Patent

active

052256871

ABSTRACT:
An output circuit is disclosed in which the signals to instruct the output devices to conduct or to non-conduct are coupled to the devices through optical signals. The effects of undesired parasitic signals which distort the desired signal are compensated for by capacitors in the circuit. The speed of operation for the circuit is substantially higher than can be achieved using phototransistor detection methods.

REFERENCES:
patent: 4390790 (1983-06-01), Rodriguez
patent: 4647794 (1987-03-01), Guajardo
patent: 4739174 (1988-04-01), Nagano
patent: 4777387 (1988-10-01), Collins
patent: 4873448 (1989-10-01), Shirai
patent: 4912335 (1990-03-01), Ehalt et al.
patent: 5006737 (1991-04-01), Fay

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