Series-capacitor electronic ballast

Details Series-capacitor electronic ballast Series-capacitor electronic ballast

1997-07-09

1998-08-04

Pascal, Robert

Electric lamp and discharge devices: systems

Current and/or voltage regulation

315307, 315DIG5, H05B 3702

Patent

active

057898715

ABSTRACT:
An electronic ballast for a discharge lamp includes a capacitive storage device which is serially connected with an AC power source and the lamp. A first combination of switches, arranged in a bridge configuration, alternately reverse the polarity in which the capacitive storage device is connected. A second combination of switches periodically bypasses the capacitive storage device and momentarily places the AC power source directly in series with the lamp.

REFERENCES:
patent: 4734624 (1988-03-01), Nagase et al.
"Principles of Power Electronics" by John G. Kassakian et al, pp. 268-269, Addison-Wesley Publishing Company, 1991.

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