Variable voltage ballast system for mini-fluorescent lamp

Details Variable voltage ballast system for mini-fluorescent lamp Variable voltage ballast system for mini-fluorescent lamp

1993-06-02

1995-05-02

Pascal, Robert J.

Electric lamp and discharge devices: systems

Condenser in the supply circuit

Condenser in shunt to the load device and the supply

315244, 315283, 315276, 315239, H05B 3700

Patent

active

054122864

ABSTRACT:
An efficient ballast for Mini-fluorescent lamps, includes an inductor, in communication with a power source and constructed as transformer with only primary winding, a fluorescent lamp in series with the inductor, and a capacitor in series with the fluorescent lamp, and optionally may include a resistor in parallel with the coil, and a switch interposed between the capacitor and power source. The value of the capacitance may change based upon the degree of change in the supply voltage.

REFERENCES:
patent: 3621331 (1971-11-01), Barron
patent: 4350929 (1982-09-01), Katoogi
patent: 5179323 (1993-01-01), Ham

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