One pin IC control circuit for a discharge lamp

Details One pin IC control circuit for a discharge lamp One pin IC control circuit for a discharge lamp

1997-07-11

1999-09-28

Wong, Don

Electric lamp and discharge devices: systems

Periodic switch in the supply circuit

Impedance or current regulator in the supply circuit

315307, 315291, 315208, H05B 3702

Patent

active

059594110

ABSTRACT:
A circuit arrangement for supplying a discharge lamp comprises a control circuit which is provided with an integrated circuit. Means for generating a signal which is a measure of the lamp voltage are coupled to one pin of the integrated circuit. The periodic switching of the integrated circuit between a first and a second state insures that the lamp voltage will not exceed a minimum admissible value and a maximum admissible value. The use of only one pin makes the integrated circuit simple and accordingly inexpensive, while in addition only a small number of external components is required.

REFERENCES:
patent: 4471269 (1984-09-01), Ganser et al.
patent: 4952849 (1990-08-01), Fellows et al.
patent: 5198726 (1993-03-01), Van Meurs et al.
patent: 5463281 (1995-10-01), Linssen
patent: 5608294 (1997-03-01), Derra et al.

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