Photoelectric switch with heating responsive to temperature and

Details Photoelectric switch with heating responsive to temperature and Photoelectric switch with heating responsive to temperature and

1989-08-17

1990-08-28

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Temperature control of photocell

250239, H01J 724

Patent

active

049528009

ABSTRACT:
The photoelectric switch includes a heating unit formed on a light transmitting plate around a beam transmission part of the body of a light receiving part. A received light quantity decision circuit compares an electrical signal corresponding to a quantity of light received with a set level to decide whether or not it is below the set level. A temperature circuit generates an electrical signal corresponding to an ambient temperature in the vicinity of the body. A driving circuit for energizing the heating unit requires that the temperature circuit below a set temperature and that the quantity of received light is also below the set level. If either condition fails, the heating unit remains deenergized.

REFERENCES:
patent: 4667105 (1987-05-01), Miyatake et al.
patent: 4695714 (1987-09-01), Kimizuka et al.
patent: 4880979 (1989-11-01), Yoshida

Affiliated with

Also associated with

Rating

Photoelectric switch with heating responsive to temperature and does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1591603