Dimmable electronic gas discharge lamp ballast

Details Dimmable electronic gas discharge lamp ballast Dimmable electronic gas discharge lamp ballast

1982-12-10

1985-06-11

Chatmon, Saxfield

Electric lamp and discharge devices: systems

Current and/or voltage regulation

Automatic regulation

315247, 315219, 315225, 315206, 315308, 315DIG4, 315DIG7, 363 41, 363 46, G05F 100, H05B 3702, H05B 3904, H05B 4136

Patent

active

045231311

ABSTRACT:
A two-wire electronic dimming ballast arrangement for one or more gas discharge lamps is disclosed which includes an inverter driven by a variable pulse width electric power and a control system for modulating the pulse width of the variable pulse width square wave electric power driving the inverter. A unique distortion suppression system is provided for suppressing current abberations and achieving substantially a unity power factor.

REFERENCES:
patent: 3890537 (1975-06-01), Park et al.
patent: 3896336 (1975-07-01), Schreiner et al.
patent: 3969652 (1976-07-01), Herzog
patent: 3999100 (1976-12-01), Dendy et al.
patent: 4240009 (1980-12-01), Paul
patent: 4251752 (1981-02-01), Stolz
patent: 4277728 (1981-07-01), Stevens
patent: 4346332 (1982-08-01), Walden
patent: 4388563 (1983-06-01), Hyltin
patent: 4392087 (1983-07-01), Zansky
patent: 4415839 (1983-11-01), Lesea
Gunther, Martin, "Neuerungen beim Zubehor fur Lichtquellen: Elektronische Vorschaltgerate im Kommen" Licht, Jul. 8, 1981, (pp. 414-417) with translation.
Kobayashi, Hisao, et al., "Electronic Energy-Saving Ballast, Superballast" Toshiba Review No. 127, May-Jun. 1980, pp. 37-41.

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