Electric lamp and discharge devices: systems – Pulsating or a.c. supply – Induction-type discharge device load
Patent
1993-04-13
1994-08-16
Mis, David
Electric lamp and discharge devices: systems
Pulsating or a.c. supply
Induction-type discharge device load
315 39, H05B 4126
Patent
active
053390083
ABSTRACT:
An electromagnetic discharge apparatus including a solid state supply or lamp ballast for energizing an electrodeless high intensity discharge (HID) lamp in a dual-ended fashion. A low power signal from a high frequency oscillator is split into two separate signals with definite phase relationship which are coupled to separate power amplifiers. In one embodiment, the signal from the high frequency oscillator is mixed with a signal from a modulation oscillator to AM, FM or pulse-width (PWM) modulate the power delivered to the lamp. This technique permits better control over the balance of power delivered to the ends of the lamp.
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Butler Scott J.
Lapatovich Walter P.
Smith Robert K.
Bessone Carlo S.
Mis David
Osram Sylvania Inc.
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