Self diagnostic switch circuit

Details Self diagnostic switch circuit Self diagnostic switch circuit

1981-09-24

1983-12-27

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

340619, 361 87, 250231SE, G01D 534

Patent

active

044233221

ABSTRACT:
A switch circuit includes an input section which is connected to a detector section by a pair of leads. The input section draws a minimum current at all times through these leads and it draws more current when a shutter is operated to expose a photo sensor to a light source. The detector section senses the current level and thereby provides an indication of shutter operation. The detector section also indicates a fault condition when the minimum current is not drawn or excessive current is drawn.

REFERENCES:
patent: 4065669 (1977-12-01), Bogel
patent: 4177394 (1979-12-01), Takasugi
patent: 4223217 (1980-09-01), Bongard et al.
patent: 4291356 (1981-09-01), Mathieu

Affiliated with

Also associated with

Rating

Self diagnostic switch circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Self diagnostic switch circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Self diagnostic switch circuit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-949401