Solid state relay with fast turnoff

Details Solid state relay with fast turnoff Solid state relay with fast turnoff

1983-03-29

1986-01-14

Miller, Stanley D.

Electrical transmission or interconnection systems

Personnel safety or limit control features

Interlock

307570, 307580, 250551, H03K 342, G02B 2700

Patent

active

045647704

ABSTRACT:
A solid state relay having a light-emitting diode, an array of series connected photodiodes, a field-effect-transistor (FET) and optically controlled switch for FET turn off is described.
The light-emitting diode is optically coupled to the array of photodiodes. Turn on of the transistor is determined entirely by the voltage developed by the array of photodiodes. Turn off of the transistor is determined by the state of the optically controlled switch.

REFERENCES:
patent: 4068135 (1978-01-01), Sonobe et al.
patent: 4227098 (1980-10-01), Brown et al.
patent: 4296331 (1981-10-01), Rodriguez
patent: 4307298 (1981-12-01), El Hamamsy et al.
patent: 4319145 (1982-03-01), Apfelbeck
patent: 4323774 (1982-04-01), Kopp
patent: 4323799 (1982-04-01), King et al.
patent: 4329625 (1982-05-01), Nishizawa et al.
patent: 4390790 (1983-05-01), Rodriguez
patent: 4419586 (1983-12-01), Phipps
patent: 4500801 (1985-02-01), Janutka
patent: 4535202 (1985-08-01), Meunier
Letter from William Sheng to Mr. Jeff Sherman dated Feb. 9, 1983 "Power-saving SSRs Separate Switching and Control" by William W. Sheng, Electronic Design, May 27, 1982, pp. 163-169.

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