H - Electricity – 05 – B
Patent
H - Electricity
05
B
355/47, 315/56
H05B 41/18 (2006.01) H01J 61/56 (2006.01)
Patent
CA 1144284
11 47,714 ABSTRACT OF THE DISCLOSURE A metal halide high-intensity discharge lamp for connection to a constant wattage-type mercury ballast including a transformer having a secondary winding having a capacitor in series circuit arrangement therewith. The lamp includes starting aid means and warm-up assistance means to ensure reliable operation. The starting aid means is a voltage doubler comprising, a diode and two resistors operating in conjunction with the ballast capa- citor and also including a normally closed heat-responsive switch means operative to prevent voltage stress on the diode after the lamp starts. The warm-up assistance means comprises a resistor in series circuit arrangement with the arc tube and a normally open heat-responsive switch means connected in parallel circuit arrangement with the resistor so that during lamp warm up, the resistor reduces the phase shift between the voltage of the lamp and the open circuit voltage of the ballast, thereby increasing the maximum sustaining voltage to the lamp when the lamp current is zero, to prevent the arc from extinguishing.
350493
Larson Daniel A.
Michael Jacob F.
Koninklijke Philips Electronics N.v.
Na
LandOfFree
Resistor-aided starting of metal halide lamps does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Resistor-aided starting of metal halide lamps, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Resistor-aided starting of metal halide lamps will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-710415