Electricity: electrical systems and devices – Control circuits for electromagnetic devices – Including means for using – or compensating for – the induced...
Patent
1987-05-11
1989-07-11
Hix, L. T.
Electricity: electrical systems and devices
Control circuits for electromagnetic devices
Including means for using, or compensating for, the induced...
34081503, 340645, H01H 4700
Patent
active
048477281
ABSTRACT:
A driver circuit for the coil in relay contains a suppressor diode across the coil terminals. Two light-emitting diodes are connected in reverse polarity so that one diode operates when the coil is energized and the other diode operates if there is current flowing in the reverse direction when the suppressor diode fails to clamp the coil voltage. The diodes may be of different colors and may be positioned close to each other to produce the composite color when they are energized at the same time or in rapid succession.
REFERENCES:
patent: 4246621 (1981-01-01), Tsukioka
patent: 4278336 (1981-07-01), Ito et al.
patent: 4434450 (1984-02-01), Gareis
patent: 4670810 (1987-06-01), Valeur
Gray David M.
Hix L. T,.
Otis Elevator Company
LandOfFree
Detecting a defective suppressor diode in a coil driving 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 Detecting a defective suppressor diode in a coil driving circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Detecting a defective suppressor diode in a coil driving circuit will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-441131