Constant current source and battery charger

Details Constant current source and battery charger Constant current source and battery charger

1988-11-16

1989-08-29

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

3072966, 307246, 307300, 307549, 323289, 323282, 320 39, 320 21, 320 40, 320 35, H03K 1760, H03K 1704

Patent

active

048620130

ABSTRACT:
A constant current battery charger includes a bucking regulator comprising a power switch transistor, a diode, an inductor and a voltage sensitive switch with adjustable delay for controlling the power switch transistor. The hysteresis or delay is obtained with a Schmitt trigger and the effect is a stable pulse width modulator in which the duty cycle of the power switch transistor is varied. A temperature sensor adds resistance to change the sensitivity of the switch and reduce charging current when a predetermined battery temperature is reached. A speed up circuit consisting of a shorting transistor is connected across the base-emitter of the switch transistor.

REFERENCES:
patent: 3011076 (1961-11-01), Bain
patent: 3602794 (1971-08-01), Westhaver
patent: 3657572 (1972-04-01), Millman
patent: 4005317 (1977-01-01), Hinrichs
patent: 4097773 (1978-06-01), Lindmark
patent: 4472672 (1984-09-01), Pacholok
patent: 4554463 (1985-11-01), Norbeck et al.
patent: 4577144 (1986-03-01), Hodgman et al.
patent: 4710695 (1987-12-01), Yamada et al.

Affiliated with

Also associated with

Rating

Constant current source and battery charger does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Constant current source and battery charger, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Constant current source and battery charger will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2240463