H - Electricity – 05 – B
Patent
H - Electricity
05
B
315/46
H05B 41/16 (2006.01) H05B 35/00 (2006.01) H05B 41/19 (2006.01)
Patent
CA 1155481
49,224 ABSTRACT OF THE DISCLOSURE Unitary light source comprises compact HID lamp and starting and operating circuit therefor operable from household AC energizing potential. The HID lamp is bal- lasted by incandescent filament means which also provides the major portion of developed light during HID warm up and after power interruption. The ballast filament and input terminals of a full-wave rectifier connect in series across the light source input terminals and the HID lamp connects across the rectifier output. A low-impedance path means and high-voltage pulse generator, which includes a high-voltage electrode operatively associated with the HID lamp, connect across the rectifier input. Initially, the voltage developed across the rectifier input is rela- tively high and the pulse generator and low-impedance path means are responsive thereto to develop high voltage pulses and also provide a low impedance path in series with the ballast filament to cause it to incandesce bright- ly. The developed high voltage pulses applied to the high voltage electrode ionize the atmosphere within the HID envelope. After the HID lamp starts, the voltage devel- oped across the rectifier input is insufficient to ener- gize the low-impedance path means and pulse generating means. As the HID lamp warms up, the brightness of the incandescent ballast filament means decreases. A lamp keep-alive comprising a DC source is connected across the rectifier means output terminals to provide lamp operating energy during periods of rectifier conduction minima and, if necessary, to provide DC energy as a lamp starting aid.
405391
Engel Joseph C.
Hicks John M.
N.v. Philips Gloeilampenfabrieken
Van Steinburg C.e.
LandOfFree
Unitary light source comprising compact hid lamp and... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Unitary light source comprising compact hid lamp and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Unitary light source comprising compact hid lamp and... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-64953