Discharge lamp lighting circuit

Details Discharge lamp lighting circuit Discharge lamp lighting circuit

2006-08-01

2006-08-01

Wong, Don (Department: 2821)

Electric lamp and discharge devices: systems

Periodic switch in the supply circuit

Periodic switch in the primary circuit of the supply...

C315S2090SC, C315S291000, C315S224000

Reexamination Certificate

active

07084580

ABSTRACT:
A discharge lamp lighting circuit1has: a DC-AC converter circuit3which receives a DC input, and which conducts AC conversion and a boosting operation; and a starting circuit4which supplies a starting signal to a discharge lamp10. The lighting circuit has a structure in which the primary and secondary circuits of an AC conversion transformer7constituting the DC-AC converter circuit3are electrically insulated from each other. An input terminal of the starting circuit4is connected to the secondary winding7sof the AC conversion transformer7to obtain an input voltage for the starting circuit, and a starting signal which is boosted by the AC conversion transformer7is superimposed on the AC-converted output to be supplied to the discharge lamp10.

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Gulko et al., “A MHz Electronic Ballast for Automotive-Type HID Lamps,” IEEE 1:39-45, Jun. 22, 1997.

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