Radiant energy – Photocells; circuits and apparatus – Signal isolator
Patent
1989-06-13
1990-07-03
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Signal isolator
250211J, 307311, 357 84, G02B 2700, H01J 4014
Patent
active
049393758
ABSTRACT:
A solid state relay uses an optically controlled shunt and series enhancement circuit between a photodiode array and an output device to provide enhanced turn-off and transient immunity characteristics. A Faraday shield may be used to cover optically active components and to provide protection against false turn-on and turn-off caused by the transients.
REFERENCES:
patent: 4104533 (1978-08-01), Iverson
patent: 4237382 (1980-12-01), Thillays
patent: 4240087 (1980-12-01), Krause et al.
patent: 4307298 (1981-12-01), El Hamamsy et al.
patent: 4390790 (1983-06-01), Rodriguez
patent: 4564770 (1986-01-01), Sherman et al.
patent: 4754175 (1988-06-01), Kobayashi et al.
patent: 4755697 (1988-07-01), Kinzer
patent: 4796084 (1989-01-01), Kamasaki et al.
Hewlett-Packard Company, Optoelectronics/Fiber Optics Applications Manual, Second Ed., 1981, pp. 3.5-3.9.
Pernyeszi Joseph
Petrilla John F.
Walters Michael D.
Hewlett--Packard Company
Kundrat Douglas A.
Messinger Michael
Nelms David C.
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