Solid state relay with shield means

Details Solid state relay with shield means Solid state relay with shield means

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.

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