Method for determining the switching state of a contact and...

Details Method for determining the switching state of a contact and... Method for determining the switching state of a contact and...

2007-05-29

2007-05-29

Nguyen, Phung T. (Department: 2612)

Communications: electrical

Condition responsive indicating system

Specific condition

C340S635000, C340S652000, C361S001000

Reexamination Certificate

active

10497155

ABSTRACT:
An input voltage contacted at the input of a contact can be through-connected to an output of the contact or switched off via a movable contactor. In order to determine the switching state of the contact, any drop in the contact voltage between the input and the output is detected. By the detected contact voltage, it can at least be determined whether the input voltage has been through-connected to the output or switched off.

REFERENCES:
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patent: 4777479 (1988-10-01), Hinckley
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patent: 100 25 276 (2001-12-01), None
Ulrich Tietze and Christoph Schenk: Halbleiter-Schaltungstechnik, pp. 852-861.

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