Electrical circuit arrangement for igniting and feeding a...

Details Electrical circuit arrangement for igniting and feeding a... Electrical circuit arrangement for igniting and feeding a...

H - Electricity

05

B

315/63

H05B 41/232 (2006.01) H05B 41/295 (2006.01)

Patent

CA 1235455

ABSTRACT: The invention relates to a circuit for an inductively stabilized discharge tube (1), which is provided with two preheatable electrodes (2, 3). The ends of one electrode (2) are connected via a first capacitor (22) and a second capacitor (24), respect- ively, to the corresponding ends of the other electrode (3). According to the invention, the second capacitor (24) remote from the supply is shunted by a PTC resistor (23), the discharge tube (1) and inter alia the PTC resistor (23) forming part of a lamp unit. The discharge tube (1) ignites - even at low ambient temper- atures - readily. In the operating condition, the influence of the PTC resistor (23) is negligible.

477181

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