Apparatus for operating discharge lamps

Details Apparatus for operating discharge lamps Apparatus for operating discharge lamps

H - Electricity

05

B

H05B 41/14 (2006.01) H05B 41/295 (2006.01) H05B 41/298 (2006.01) H05B 41/36 (2006.01)

Patent

CA 2432450

An apparatus for operating a plurality of discharge lamps is to be designed so as to be more cost- effective. A first current control device, in particular a heat-sensitive resistor having a positive temperature coefficient, is connected in parallel with a first contact device for electrically connecting a first discharge lamp. Furthermore, a second contact device for electrically connecting a second discharge lamp is connected in parallel with a second current control device, the first and second contact devices (13, 14; 13a, 14a) being connected in series. A defined preheating period for the lamps can therefore be achieved. By using a sequential starting capacitor in parallel with one of the lamps, impermissible load current surges may be avoided.

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