Series-parallel switchable capacitor charging system

Details Series-parallel switchable capacitor charging system Series-parallel switchable capacitor charging system

1993-05-24

1995-10-24

Wong, Peter S.

Electricity: battery or capacitor charging or discharging

Serially connected batteries or cells

With discharge of cells or batteries

363 67, 323234, H02M 7217

Patent

active

054612977

ABSTRACT:
In a capacitor charging system having multiple rectified outputs of secondary (transformer) windings, the rectified outputs are connected in parallel for enhanced charging of an energy-storage capacitor below a threshold voltage, and are connected in series above the threshold voltage. In the parallel mode, forward biased diodes connected from rectifier-to-rectifier effect the parallel connection. In the series mode, a switch closure effectively connects the rectifiers in series, which reverse biases the diodes. For switching two or more rectified outputs, the number of switch closures required is one less than the secondary windings. Multiple windings (and rectifiers) can be paired and switched, and two or more thresholds can be employed.

REFERENCES:
patent: 3106672 (1963-01-01), Mills
patent: 3654537 (1972-04-01), Coffey
patent: 3694731 (1972-09-01), Cherry
patent: 3984750 (1976-10-01), Pfeffer et al.
patent: 4009431 (1977-02-01), Johnson
patent: 4339704 (1982-07-01), McSparran et al.
patent: 4429357 (1984-01-01), Hausler et al.
patent: 5398182 (1985-03-01), Crosby

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