Dynamic contact checking circuit

Details Dynamic contact checking circuit Dynamic contact checking circuit

H - Electricity

02

H

324/21, 328/114.

H02H 3/04 (2006.01) H01H 9/16 (2006.01) H01H 71/04 (2006.01) H03K 17/18 (2006.01) H03K 17/795 (2006.01) H04B 10/00 (2006.01)

Patent

CA 1160286

ABSTRACT OF THE DISCLOSURE A fail safe type of monitoring circuit for contacts is provided using an opto-isolator. The opto-isolator is energized in response to the operation of the contacts to clearly indicate whether the contacts are open or closed, and whether the circuit components are functioning in a valid manner. -10-

383804

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