Circuit arrangement for operating discharge lamps

Details Circuit arrangement for operating discharge lamps Circuit arrangement for operating discharge lamps

H - Electricity

05

B

H05B 41/14 (2006.01) H05B 41/28 (2006.01) H02M 1/00 (2006.01)

Patent

CA 2428295

Circuit arrangement for operating discharge lamps In the case of circuit arrangements for operating gas- discharge lamps (Lp), a charge pump (D5, D6, C31, C32) is often used for the purposes of power-factor correction. If this is the case, poorly igniting lamps (Lp) experience an increase in voltage across a storage capacitor (C1). This is avoided according to the invention by a PTC (KL) in parallel with diodes (D5, D6) of the charge pump.

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