Optically isolated signal coupler with linear response

Details Optically isolated signal coupler with linear response Optically isolated signal coupler with linear response

1992-12-21

1994-03-22

Messinger, Michael

Radiant energy

Photocells; circuits and apparatus

Signal isolator

307311, H01J 4014

Patent

active

052967158

ABSTRACT:
An optocoupler for isolating electrical signals that translates an electrical input signal linearly to an electrical output signal. The optocoupler comprises a light emitter, a light receiver, and a light transmitting medium. The light emitter, preferably a blue, silicon carbide LED, is of the type that provides linear, electro-optical conversion of electrical signals within a narrow wavelength range. Correspondingly, the light receiver, which converts light signals to electrical signals and is preferably a cadmium sulfide photoconductor, is linearly responsive to light signals within substantially the same wavelength range as the blue LED.

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