Switch position indicator

Details Switch position indicator Switch position indicator

1987-04-03

1988-10-11

Orsino, Jr., Joseph A.

Communications: electrical

Condition responsive indicating system

Specific condition

340638, 200308, G08B 2100

Patent

active

047774797

ABSTRACT:
A remote indicator for displaying the position of a power control switch whether or not power is applied to the switch. An auxiliary DC power supply provides a reference potential to a plurality of voltage dividers. One voltage divider provides a first reference potential to a comparator. A second voltage divider and the reference power supply are connected through the power control switch so that a second reference potential is applied to the comparator when the power switch is closed. Differences of the two reference potentials corresponding to the open and closed switch positions are sensed by the comparator and used to activate an indicator accordingly.

REFERENCES:
patent: 4672310 (1987-06-01), Sayed
patent: 4691143 (1987-09-01), Lange

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