Electricity: battery or capacitor charging or discharging – Serially connected batteries or cells – With discharge of cells or batteries
Patent
1984-11-14
1987-04-14
Salce, Patrick R.
Electricity: battery or capacitor charging or discharging
Serially connected batteries or cells
With discharge of cells or batteries
320 39, H02J 700
Patent
active
046581995
ABSTRACT:
A current pulse producing, current regulating circuit includes a SCR arranged to pass a current pulse once each positive going half wave input supplied thereto. The SCR is controlled by a control circuit free of current feedback and timing circuitry and responsive to the an unfiltered, rectified A.C. input. The control circuit produces a firing signal, which is applied to the control electrode of the SCR, at a point during the downward swing of each positive going half wave input. The control circuit includes a OR function circuit responsive to the unfiltered rectified input applied to the control circuit and to an output from a circuit also responsive to the unfiltered rectified input; the last mentioned circuit having a hysteresis characteristic. The SCR may be operatively associated with a second SCR and arranged to fire it thereby producing higher amplitude current pulses. Battery charging and forming circuits, as well as off-line power supplies, incorporating the current regulating circuit are disclosed. The input to the control circuit may be either a full wave or a half wave rectified A.C. input. Batteries of different types and having different numbers of cells can be accomodated.
REFERENCES:
patent: 3543127 (1970-11-01), Fry et al.
patent: 4321523 (1982-03-01), Hammel
Ault Anita M.
Bloom Leonard
Salce Patrick R.
Solid State Charger Research and Development
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