Fluorescent dimming ballast utilizing a resonant sine wave power

Details Fluorescent dimming ballast utilizing a resonant sine wave power Fluorescent dimming ballast utilizing a resonant sine wave power

1988-01-19

1990-06-12

Boudreau, Leo H.

Electric lamp and discharge devices: systems

Periodic switch in the supply circuit

Impedance or current regulator in the supply circuit

315244, 315243, 315DIG2, 315DIG4, 315DIG5, H05B 3702

Patent

active

049336053

ABSTRACT:
In a method or combination, a DC voltage supply, a converter including a series or a parallel resonant circuit for converting the DC voltage to a sinusoidal current, and a load including at least one fluorescent lamp responsive to the sinusoidal current to effect excitation of the lamp.

REFERENCES:
patent: 4127795 (1978-11-01), Knoll
patent: 4350891 (1982-09-01), Wuerflein
patent: 4353009 (1982-10-01), Knoll
patent: 4370600 (1983-01-01), Zansky
patent: 4392087 (1983-07-01), Zansky
patent: 4544863 (1985-10-01), Hashimoto
patent: 4641061 (1987-02-01), Munson
patent: 4700113 (1987-10-01), Stupp et al.
"Siemens Consumer IC Data Book 1987/88", pp. 643-645 (copy submitted herewith).
"Siemens Energy and Automation", vol. 11, No. 2, March/April, 1985 (copy not available to Applicants).

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