Fiber optic control apparatus

Details Fiber optic control apparatus Fiber optic control apparatus

1980-03-03

1982-01-26

Britton, Howard

Telecommunications

Receiver or analog modulated signal frequency converter

Signal selection based on frequency

350 9613, 350 9614, H04B 900

Patent

active

043132260

ABSTRACT:
Electro-optical apparatus for transmitting Boolean switching signals over substantial distances includes a transmitter having a light-emitting diode operable to apply light pulses at a line frequency rate (or double a line frequency rate) to an optic fiber. A remote receiver includes a photosensor for receiving light pulses from the optic fiber, means for amplifying signals from the photosensor, an opto-isolator comprising a light-emitter and a photo-thyristor operated by said light-emitter, an electronic switch connected to energize a load device, and means responsive to said photo-thyristor for controlling the electronic switch.

REFERENCES:
patent: 3294901 (1966-12-01), Stanghi
patent: 3842403 (1974-10-01), Konopka
patent: 4023887 (1977-05-01), Speers
patent: 4156134 (1979-05-01), Minner

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