Photointerrupter driving circuit capable of decreasing the numbe

Details Photointerrupter driving circuit capable of decreasing the numbe Photointerrupter driving circuit capable of decreasing the numbe

1999-01-21

2000-11-21

Ben, Loha

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

318453, 347 7, 396277, 396397, 250229, H01J 40121

Patent

active

061506516

ABSTRACT:
In a photointerrupter comprising a light emitting diode and a photo transistor which are opposed to each other, the photo transistor has an emitter which is grounded through a resistor while the light emitting diode has a cathode which is connected to an input terminal of a one IC chip for controlling a flexible disk drive. The one IC chip incorporates a constant current source which is connected to the input terminal through an npn-type bipolar transistor. The one IC chip incorporates a logic circuit having an output terminal which is connected to a base of the npn-type bipolar transistor.

REFERENCES:
patent: 4882511 (1989-11-01), von de Heide
patent: 4972078 (1990-11-01), Hasebe et al.
patent: 4996549 (1991-02-01), Yamaguchi
patent: 5952800 (1999-09-01), Shibata et al.
patent: 5953547 (1999-09-01), Imai et al.

Affiliated with

Also associated with

Rating

Photointerrupter driving circuit capable of decreasing the numbe does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Photointerrupter driving circuit capable of decreasing the numbe, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Photointerrupter driving circuit capable of decreasing the numbe will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1259638