Inverter power supply and ballast circuit

Details Inverter power supply and ballast circuit Inverter power supply and ballast circuit

1990-10-29

1991-09-10

Mis, David

Electric lamp and discharge devices: systems

Periodic switch in the supply circuit

Impedance or current regulator in the supply circuit

315205, 315209R, 315226, 315307, H05B 4129

Patent

active

050476904

ABSTRACT:
A compact screw-in fluorescent lamp is mounted on an ordinary Edison-type screw-base. An inverter-type ballast is integrally included with the base, thereby making the fluorescent lamp capable of being screwed into an ordinary lamp socket and to be powered therefrom by ordinary power line voltage. The fluorescent lamp is folded and has a narrowed section of glass. The inverter-type ballast is powered via a voltage doubler and powers the fluorescent lamp via an tuned L-C circuit. Light output can be adjusted by way of an adjustment means functional to adjust the inverter frequency, thereby correspondingly to adjust the magnitude of the lamp current.

REFERENCES:
patent: 4060752 (1977-11-01), Walker
patent: 4260932 (1981-04-01), Johnson
patent: 4346332 (1982-08-01), Walden
patent: 4677345 (1987-06-01), Nilssen

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