Lighting device of fluorescent lamp

Details Lighting device of fluorescent lamp Lighting device of fluorescent lamp

1990-04-30

1991-09-17

LaRoche, Eugene R.

Electric lamp and discharge devices: systems

Periodic switch in the supply circuit

Periodic switch in the primary circuit of the supply...

315244, 315DIG5, 315DIG7, 331113A, 363 22, 363132, H05B 3702

Patent

active

050497880

ABSTRACT:
A lighting circuit for a fluorescent lamp includes a D.C. power supply which is connected across a pair of series transistors. A transformer has first and second windings connected to the bases of respective transistors and a third winding connected between the junction of the transistor pair and a booster transformer. The filaments of the fluorescent lamp are connected through a choke coil to the booster transformer, and a capacitor is connected in resonant circuit with the choke coil.

REFERENCES:
patent: 4319316 (1982-03-01), Farrer et al.
patent: 4553070 (1985-11-01), Sairanen et al.
patent: 4581562 (1988-04-01), Nilssen
patent: 4722040 (1988-01-01), Ball
patent: 4912374 (1990-03-01), Nagase et al.

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