Resonance type power converter unit, lighting apparatus for illu

Details Resonance type power converter unit, lighting apparatus for illu Resonance type power converter unit, lighting apparatus for illu

1997-08-29

1999-11-02

Philogene, Haissa

Electric lamp and discharge devices: systems

Current and/or voltage regulation

315209R, 315307, 315244, 363134, G05F 100

Patent

active

059777257

ABSTRACT:
A resonance type power converter unit has, in an inverter circuit in which voltage driven type semiconductor devices each having the function not to prevent a backward current are connected in series, the respective voltage driven devices are associated with capacitors which are charged or discharged with currents flowing through the devices and voltage detectors for detecting voltages of the capacitors, and drive circuits for turning on and off the voltage driven devices in accordance with outputs of the voltage detectors. With the resonance type power converter unit, stable resonance operation synchronous with a high-frequency load current can be warranted.

REFERENCES:
patent: 4316243 (1982-02-01), Archer
patent: 4686428 (1987-08-01), Kuhnel et al.
patent: 4952849 (1990-08-01), Fellows et al.
patent: 5559394 (1996-09-01), Wood
patent: 5614810 (1997-03-01), Nostwick et al.
patent: 5671128 (1997-09-01), Nakamura et al.
patent: 5739645 (1998-04-01), Xia et al.

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