Self biased electrically isolated remote switch powered by an op

Details Self biased electrically isolated remote switch powered by an op Self biased electrically isolated remote switch powered by an op

1993-08-02

1995-02-28

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Signal isolator

327514, G02B 2700

Patent

active

053939891

ABSTRACT:
A self biased isolated remote switch (11) for electrically isolating a switch (24) from a circuit (16). The circuit (16) is coupled to the primary side of the self biased isolated remote switch (11) while the switch is coupled to the secondary side. The secondary side does not need a power source, power is provided through non-electrical coupling from the primary side. The self biased isolated remote switch (11) comprises a first circuit (13) and a second circuit (14) both on the primary side, and a third circuit (12) on the secondary side. The first circuit (13) non-electrically couples to the third circuit (12) for providing power. The third circuit (12) non-electrically couples to the second circuit (14) for indicating when the switch (24) is closed.

REFERENCES:
patent: 4058735 (1977-11-01), Tippner
patent: 4129785 (1978-12-01), Kadah
patent: 4529904 (1985-07-01), Hattersley
patent: 4977329 (1990-12-01), Eckhardt et al.
patent: 5134282 (1992-07-01), Sargoytcher

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