Patent ID: 6417629
Filing Date: 2002-07-09
Classification: H05B,Y02B

Abstract:
An electronic ballast, comprising:a DC power source; a transformer comprising first, second and third windings, said first, second and third windings being inductively coupled, the third winding being connected in parallel with a load; first and second circuit pathways connected in parallel, the first circuit pathway comprising a first switch connected in series with the first winding, and the second circuit pathway comprising the second winding connected in series with a second switch, the DC power source also connected in parallel with the first and second circuit paths to provide an input voltage source; a capacitor connecting the point between the first switch and first winding of the first circuit pathway with the point between the second switch and the second winding of the second circuit pathway; said first winding effecting charging of the capacitor upon switching off of the first switch and said second winding effecting charging of the capacitor upon switching off of the second switch.