Discharge lamp driving circuit

Details Discharge lamp driving circuit Discharge lamp driving circuit

H - Electricity

05

B

315/54, 315/55

H05B 41/292 (2006.01)

Patent

CA 1293766

ABSTRACT A discharge lamp driving circuit includes a chopper with a first switching circuit and an inverter with a second switching circuit. The copper and inverter are connected to a dc voltage source and controlled to produce a composite lamp driving current composed of a high frequency alternating current interrupted by a dc current in order to keep the discharge lamp free from an acoustic resonance. The chopper and the inverter are arranged to have at least one common switching elements in their first and second switching circuits.

581372

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