Digital input circuit with fault detection means

Details Digital input circuit with fault detection means Digital input circuit with fault detection means

G - Physics

01

R

324/58.2

G01R 31/08 (2006.01) G01R 31/02 (2006.01) H03K 19/14 (2006.01)

Patent

CA 1062334

Abstract of the Disclosure The state of a sensing device such as a switch is indicated as a logic signal at a circuit output terminal and a malfunction is indicated at another circuit output when the connections to the sensing device open circuit or short circuit. The input circuit employs a pair of LED photo-isolators which conduct during alternate half cycles of an a-c current which is applied through the sensing device when it is closed. A diode connects in shunt with the sensing device and when the device is open, only one of the photo-isolators conducts. If a malfunction occurs, neither photo-isolator conducts.

267638

Affiliated with

Also associated with

Rating

Digital input circuit with fault detection means does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Digital input circuit with fault detection means, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Digital input circuit with fault detection means will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-549282