Power supply for a high voltage device

Details Power supply for a high voltage device Power supply for a high voltage device

2008-01-01

2008-01-01

Vo, Tuyet (Department: 2821)

Electric lamp and discharge devices: systems

Pulsating or a.c. supply

With power factor control device

C315S291000, C315S307000, C315S224000, C315S2090SC

Reexamination Certificate

active

07315134

ABSTRACT:
Control of an output pulse width by a PWM control circuit is stopped and the initial pulse string having a fixed pulse width is outputted in order to obtain a power supply voltage rise within a predetermined time period at the time of turning on the power. During normal operation, the voltage detected by a voltage detecting circuit is captured by a PWM control circuit, and the pulse width of the output pulse string is adjusted according to the detected voltage in order to keep the power supply voltage constant.

REFERENCES:
patent: 4614999 (1986-09-01), Onodera et al.
patent: 4928295 (1990-05-01), Tanaka
patent: 5128593 (1992-07-01), Gilbert
patent: 5568369 (1996-10-01), Ohms et al.
patent: 2004/0085027 (2004-05-01), Nakagawa et al.
patent: 61-179645 (1986-11-01), None
patent: 1-295665 (1989-11-01), None
patent: 11-149880 (1999-06-01), None
patent: 2003-153533 (2003-05-01), None
Patent Abstracts of Japan, vol. 1999, No. 11, Sep. 30, 1999.
Patent Abstracts of Japan, vol. 1998, No. 01, Jan. 30, 1998.

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