Apparatus for detecting erroneous operation in a non-contact pus

Details Apparatus for detecting erroneous operation in a non-contact pus Apparatus for detecting erroneous operation in a non-contact pus

1992-11-25

1994-06-14

Gaffin, Jeffrey A.

Electrical transmission or interconnection systems

Switching systems

Condition responsive

307112, H01H 3500

Patent

active

053213114

ABSTRACT:
To detect a faulty operation in a non-contact switch, a pulse signal is applied to the light emitting element of the non-contact switch. The input pulse signal is compared with an output signal generated by a light receiving element of the non-contact switch. The faulty operation of the non-contact switch is discriminated in accordance with the thus compared input and output signals.

REFERENCES:
patent: 4417824 (1983-11-01), Paterson et al.
patent: 4442425 (1984-04-01), Eibner
patent: 4641026 (1987-02-01), Garcia, Jr.
patent: 4774407 (1988-09-01), Erbe
patent: 4795900 (1989-01-01), Kokubu
patent: 4816671 (1989-03-01), Umemura
patent: 4855590 (1989-08-01), Bures et al.

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