Electricity: battery or capacitor charging or discharging – Serially connected batteries or cells – With discharge of cells or batteries
Patent
1975-03-17
1976-11-09
Hickey, Robert J.
Electricity: battery or capacitor charging or discharging
Serially connected batteries or cells
With discharge of cells or batteries
317100, 320DIG2, 336192, H02J 700, H01L 112
Patent
active
039913562
ABSTRACT:
A battery charger circuit made up of a transformer and rectifier for providing a D.C. current having a positive and a negative terminal. A silicon control rectifier having a cathode, an anode, and a gate. The cathode of the silicon control rectifier is connected to the positive terminal of the rectifier circuit. The anode of the rectifier is connected to the positive terminal of the charger and the resistors are connected in a parallel with the cathode and gate of the silicon control rectifier.
The charger has a unique mechanical structure wherein a printed circuit board carries the electronic component and the printed circuit board is supported on the winding of the transformer. Both the transformer and the printed circuit board are enclosed in a chassis having a removable cover. The transformer has a flat top surface and the silicon control rectifier has a flat bracket which rests on the top surface of the transformer and the cover for the chassis rests on the bracket holding the bracket in heat transfer relation with the transformer cover.
The transformer is rated considerably higher than necessary, therefore the transformer never gets hot and the heat dissipated by the silicon control rectifier is dissipated through its back to the frame of the transformer which acts as a heat sink. The printed circuit board is supported on the transformer coil by four terminals which extend outwardly from the insulation of the coil.
REFERENCES:
patent: 2979607 (1961-04-01), Herzfeld
patent: 3296515 (1967-01-01), Knauth
patent: 3365645 (1968-01-01), Jacobs
patent: 3371302 (1968-02-01), Mas
patent: 3479563 (1969-11-01), Roy
patent: 3801874 (1974-04-01), Stefani
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