Starting and operating circuit for gaseous discharge lamps

Details Starting and operating circuit for gaseous discharge lamps Starting and operating circuit for gaseous discharge lamps

H - Electricity

05

B

315/58

H05B 41/30 (2006.01) H05B 41/18 (2006.01)

Patent

CA 1060945

ABSTRACT OF THE DISCLOSURE Operating circuits for gaseous discharge lamps, such as those of metal vapor type, having ballast devices of conventional type are provided with high voltage generat- ing means for applying high voltage starting pulses on the lamp. The circuits comprise a charging capacitor and a voltage sensitive switch device forming a series dis- charge loop with a selected number of turns of the ballast coil winding at its output end, a resistor in series with the capacitor, and a choke coil in series with the resistor to provide improved ignition voltage and energy for starting lamps of relatively low operating voltage.

231458

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