Circuit arrangement for operating low-pressure discharge lamps

Details Circuit arrangement for operating low-pressure discharge lamps Circuit arrangement for operating low-pressure discharge lamps

H - Electricity

05

B

H05B 41/26 (2006.01) H05B 41/28 (2006.01)

Patent

CA 2267918

In the circuit arrangement for the high-frequency operation of a low-power low- pressure discharge lamp having a mains rectifier and a half-bridge circuit, a diode is connected in series and in the DC non-conducting direction in the connecting line between the second electrode of the lamp and the positive or negative pole of the rectifier. Moreover, the tap between the diode and the second electrode is connected to the other pole of the mains rectifier via a capacitor, and a resistor is connected in parallel with the diode. The circuit thus created acts as a passive harmonic filter which fulfills for the circuit arrangement the IEC regulations of class D with reference to line current harmonic content.

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