Intensity control of fluorescent lamps

Details Intensity control of fluorescent lamps Intensity control of fluorescent lamps

1976-09-27

1979-04-17

Smith, Alfred E.

Electric lamp and discharge devices: systems

Periodic switch in the supply circuit

Silicon controlled rectifier ignition

315DIG5, 315DIG7, H05B 3702, H05B 3904, H05B 4136

Patent

active

041503236

ABSTRACT:
A control circuit for a battery-operated fluorescent lamp has a transistorized inverter which acts as a blocking oscillator. Lamp intensity is controlled by applying an adjustable bias, either automatic or manual, to the base of the blocking oscillator transistor.

REFERENCES:
patent: 3278861 (1966-10-01), Cunningham
patent: 3311805 (1967-03-01), Kittl et al.
patent: 3389298 (1968-06-01), Skirvin
patent: 3501674 (1970-03-01), Moore

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