.~ In combination with or also constituting light responsive device {3}
83
.~.~ Light coupled transistor structure
DEFINITION
Classification: 257/83
Light coupled transistor structure:
(under subclass 80) Subject matter wherein the active solid-state device has a pair of rectifying junctions, a first of which when forward biased produces light which, when absorbed in the depletion region of the second junction when reverse biased, produces a current through the second junction, with the first junction functioning similarly to the emitter-base junction, and the second junction functioning similarly to the base-collector junction, of an ordinary bipolar transistor.
SEE OR SEARCH CLASS
250, Radiant Energy,
551, for signal isolator for optically coupled light emitter and light detector combinations wherein the devices are used to isolate electrical signals.
