Sequential, differential ignition of series operated arc lamps

Electric lamp and discharge devices: systems – Current and/or voltage regulation – Plural load device regulation

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315301, 315192, 315209CD, 315289, G05F 100

Patent

active

054951500

ABSTRACT:
A series of arc lamps each has an inductor connected in series with its anode which is field-coupled to a similar inductor connected to its cathode, the inductors being connected in series with each other through the inductors between an arc lamp power supply and a high current modulator for illuminating the arc lamps, once ignited. Ignition takes place serially from a single source of high voltage through respective charging networks, the charge time of each network being different from the others so as to successively create arcs in the arc lamps in sequence. The high voltage used for initial ignition of the arc lamps is differentially balanced to ground by means of the coils in series with the cathode and anode respectively of each arc lamp. The coils are poled so that the buildup of field in each coupled pair oppose each other, thereby rendering the coils invisible to the high current modulation during illumination of the arc lamps.

REFERENCES:
patent: 4461982 (1984-07-01), Fahnrich
patent: 4958109 (1990-09-01), Naum
patent: 5013977 (1991-05-01), Droho

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