Electricity: battery or capacitor charging or discharging – Serially connected batteries or cells – With discharge of cells or batteries
Patent
1984-02-06
1986-11-04
Wong, Peter S.
Electricity: battery or capacitor charging or discharging
Serially connected batteries or cells
With discharge of cells or batteries
320 23, 320 40, 320 48, 320 59, H02J 700
Patent
active
046212256
ABSTRACT:
A flashlight battery charging circuit includes a diode bridge which full-wave rectifies an AC voltage supplied from a 120 VAC supply through a coupling capacitor. The output terminals of the bridge are coupled to the battery through a Zener diode circuit which terminates current flow from the bridge to the battery when the battery voltage reaches a predetermined level. A storage capacitor has one terminal thereof connected to the coupling capacitor and the other terminal thereof connected to the output of the rectifying bridge through a diode and to the battery through a current-limiting resistor and an LED. The storage capacitor is charged during alternate half cycles of the AC supply voltage to a relatively high voltage and on the remaining half cycles is discharged through the current-limiting resistor and the LED to supply to the battery a limited current at a relatively high voltage.
REFERENCES:
patent: 3305755 (1967-02-01), Walsh
patent: 3327198 (1967-06-01), Rauch
patent: 3356928 (1967-12-01), Parrish
patent: 3413537 (1968-11-01), Sharp et al.
patent: 4177413 (1979-12-01), Ascoli
patent: 4281278 (1981-07-01), Bilsky et al.
patent: 4323960 (1982-04-01), Jones
"Battery Application Manual", Gates Energy Products, Inc., pp. 39-48, 1980.
"The Sealed Lead Battery Handbook", General Electric Company, pp. 5, 7, 39-43, 96 and 97, 1980.
Ault Anita M.
Pittway Corporation
Wong Peter S.
LandOfFree
Passive transformerless battery charging 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 Passive transformerless battery charging circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Passive transformerless battery charging circuit will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-698441