Optically coupled electric power relay

Details Optically coupled electric power relay Optically coupled electric power relay

1979-08-09

1981-10-20

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Signal isolator

307311, G02B 2700

Patent

active

042963311

ABSTRACT:
The present invention relates to power relays and more particularly to optically coupled, zero-voltage switching electric power relays. Operating from logic-level signals, the device can control loads of several amperes or more at 60-400 Hz line voltages of at least 240 VAC. The invention introduces meaningful superior performance characteristics while at the same time incorporating unique cost reduction methods.

REFERENCES:
patent: 3628039 (1969-12-01), Ochs
patent: 3693060 (1972-09-01), Joyce
patent: 3708672 (1973-01-01), Marinkovic
patent: 3976877 (1976-08-01), Thillays
patent: 4112308 (1978-09-01), Olschewski et al.
patent: 4124860 (1978-11-01), Johnson
patent: 4129785 (1978-12-01), Kadah

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