H - Electricity – 05 – B
Patent
H - Electricity
05
B
315/62
H05B 41/16 (2006.01) H05B 41/36 (2006.01)
Patent
CA 1177875
LD 8048 STARTING AND OPERATING CIRCUIT FOR GASEOUS DISCHARGE LAMPS Abstract of the Disclosure Starting and operating circuit for gaseous discharge lamps has device for quickly re-starting extinguished lamps while still hot. Circuit comprises a source of alternating current, an inductive regulator ballast having its input connected to the alternating current source, and a gaseous discharge lamp connected to the output of the ballast, a sine wave oscillator circuit having its input connected to the current supply and having its output connected to a transformer connected in series between the ballast and the lamp for stepping up and applying voltage to a lamp, the oscillator circuit comprising a transistor switch and an oscillator transformer connected to the step-up transformer for producing a high voltage, high frequency sine wave for starting and re-starting the discharge lamp. The operation of the oscillator circuit is improved by a turn-off circuit comprising series- connected diode and inductor connected to the transistor and the oscillator transformer.
390563
Company General Electric
Eckersley Raymond A.
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