Radiant energy – Photocells; circuits and apparatus – Photocell controls its own optical systems
Patent
1986-08-25
1988-05-10
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Photocell controls its own optical systems
250561, 250214AG, G01J 132
Patent
active
047437499
ABSTRACT:
A circuit is described which can be used to record rapidly occurring faults in a slowly reacting circuit which is self compensating so that the photoelectric light emitters used in the circuit have their flux maintained constant.
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Curley John E.
Nelms David C.
Oen William L.
PPG Industries Inc.
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