Electric lamp and discharge devices: systems – Surge generator or inductance in the supply circuit
Patent
1978-02-09
1979-12-18
LaRoche, Eugene R.
Electric lamp and discharge devices: systems
Surge generator or inductance in the supply circuit
315106, 315290, 315DIG7, H05B 4116
Patent
active
041796411
ABSTRACT:
An electrical circuit for operating an electrical discharge lamp has a pair of terminals for connection to a supply of voltage of substantially sinusoidal waveform, a second pair of terminals for connection with a discharge lamp, a ballast impedance connected between one of the first pair of terminals and one of the second pair of terminals, a starting device for aiding initiation of discharge in the lamp and means for disabling the starting device when a discharge has been initiated in the lamp. The means for disabling the starting device operates in response to a change in the voltage waveform across the second pair of terminals from substantially sinusoidal to substantially square.
REFERENCES:
patent: 3978369 (1976-08-01), Imaizumi et al.
patent: 4015167 (1977-03-01), Samuels
Moerkens, An Electronic Starter for Long Fluorescent Lamps, Philips Technical Review, vol. 31, No. 2, 1970, pp. 54-58.
LaRoche Eugene R.
The General Electric Company Limited
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