Electric lamp and discharge devices: systems – Condenser in the supply circuit – Inductance in the condenser circuit
Patent
1976-02-25
1978-01-03
LaRoche, Eugene R.
Electric lamp and discharge devices: systems
Condenser in the supply circuit
Inductance in the condenser circuit
315101, 315239, 315276, 315DIG7, H05B 4116, H05B 41232
Patent
active
040669327
ABSTRACT:
A device for starting and operating a discharge lamp, in particular a low pressure sodium vapor lamp. The device comprises two input terminals connected by means of a coil and the primary winding of an auto-transformer with the lamp connected in series with a capacitor between the ends of the transformer secondary winding. In the operating condition of the lamp the core of the transformer becomes saturated. The lamp is shunted by an electronic starter which assists, in the operating condition of the lamp, in the restart of the lamp during each half cycle of the AC electric supply.
REFERENCES:
patent: 3235769 (1966-02-01), Wattenbach
patent: 3371245 (1968-02-01), Hume
patent: 3758818 (1973-09-01), Kaneda
Franzblau Bernard
LaRoche Eugene R.
Trifari Frank R.
U.S. Philips Corporation
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