Electronic ballast-inverter for multiple fluorescent lamps

Details Electronic ballast-inverter for multiple fluorescent lamps Electronic ballast-inverter for multiple fluorescent lamps

1979-07-20

1981-03-31

LaRoche, Eugene R.

Electric lamp and discharge devices: systems

Periodic switch in the supply circuit

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

315187, 315189, 315224, 315244, 315245, 315324, 315DIG7, 363 37, 363133, H05B 4129

Patent

active

042596149

ABSTRACT:
An electronic ballast-inverter for multiple fluorescent lamps employs a push-pull inverter and a series resonant circuit for driving the lamps. The inverter operates at the resonant frequency of the series resonant circuit. Current in the resonant circuit is limited, for low-load conditions, in response to a sensing voltage which is used to lower the frequency of operation of the inverter, to make the load more reactive.

REFERENCES:
patent: 3710177 (1973-01-01), Ward
patent: 3746921 (1973-07-01), Marshall et al.
patent: 3953768 (1976-04-01), Meredith et al.
patent: 4127798 (1978-11-01), Anderson
patent: 4158792 (1979-06-01), Kuroi et al.

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