Electronic ballast circuit for fluorescent lamps

Details Electronic ballast circuit for fluorescent lamps Electronic ballast circuit for fluorescent lamps

1993-10-15

1995-02-28

Pascal, Robert J.

Electric lamp and discharge devices: systems

Periodic switch in the supply circuit

Silicon controlled rectifier ignition

315206, 315291, 315DIG2, 315DIG7, H05B 3702

Patent

active

053940644

ABSTRACT:
An electronic ballast circuit for multiple fluorescent lamps. Control is achieved by varying the voltage and the frequency of operation of an inverter utilized to drive the fluorescent lamps. A separate voltage boost converter provides regulated voltage to the converter. Dimming is accomplished by varying the voltage either manually or in response to sensor circuitry.

REFERENCES:
patent: 4251752 (1981-02-01), Stolz
patent: 4277728 (1981-07-01), Stevens
patent: 5055746 (1991-10-01), Hu et al.

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