H - Electricity – 05 – B
Patent
H - Electricity
05
B
355/44, 315/56
H05B 41/16 (2006.01) H02M 5/20 (2006.01) H03K 3/352 (2006.01) H05B 41/04 (2006.01)
Patent
CA 1155235
TITLE OF THE INVENTION: CIRCUIT SYSTEM FOR LIGHTING A DISCHARGE LAMP OR LAMPS ABSTRACT OF THE DISCLOSURE: A discharge lamp lighting circuit system comprises a dis- charge lamp, an intermittent oscillation circuit, and an arrangement for controlling the energy supplied for lighting the discharge lamp with a high power factor. The intermittent oscillation circuit is energized by a low frequency a. c. power supply, i.e. a commercial alternating current power supply, for intermittently generating a high frequency high voltage in each half cycle of the alternating current of the low frequency a. c. power supply. By supplying the low frequency alternating current voltage and the intermittent high frequency high voltage to the lamp the discharge lamp is reignited in each half cycle of the alternating current of the low frequency a. c. power supply and the lit state of the discharge lamp is sustained by the low frequency alternating current voltage. The supplied energy controlling arrangement supplies the low frequency current to the discharge lamp during the operation period of the intermittent oscillation circuit and it also supplies the high frequency current generated by the intermittent oscillation circuit, effectively to the dis- charge lamp, whereby the discharge lamp is lit with a high power factor.
367384
Gowling Lafleur Henderson Llp
New Nippon Electric Company Ltd.
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