High frequency transistor ballast

Details High frequency transistor ballast High frequency transistor ballast

1975-06-12

1977-08-16

La Roche, Eugene R.

Electric lamp and discharge devices: systems

Periodic switch in the supply circuit

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

315220, 315284, 331113A, 331113S, 363133, 363135, H05B 4129

Patent

active

040428559

ABSTRACT:
A high frequency transistor ballast is utilized to drive flourescent lamps. The electrical system of the ballast consists of a central rectifying and control panel and a high frequency inverter. There is also provided a low energy switch in the high frequency inverter system controlling the operation of the high frequency transistor ballast.

REFERENCES:
patent: 2923856 (1960-02-01), Greene et al.
patent: 2928994 (1960-03-01), Widakowich
patent: 2964676 (1960-12-01), Davies et al.
patent: 3248605 (1966-04-01), Tompkinson
patent: 3317856 (1967-05-01), Wilkinson
patent: 3579026 (1971-05-01), Paget
patent: 3700956 (1972-10-01), Cluett
patent: 3710177 (1973-01-01), Ward
patent: 3753071 (1973-08-01), Engel et al.
patent: 3753076 (1973-08-01), Zelina
patent: 3754160 (1973-08-01), Jensen
patent: 3758821 (1973-09-01), Canup
patent: 3766467 (1973-10-01), Reising, Jr.
patent: 3769545 (1973-10-01), Crane

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