| 摘要 |
A light source driving device is provided to increase a life-span of components in a circuit by forming two full-bridge inverter circuits using first and second bridge circuits with one synchronous switching bridge. A light source driving device includes a synchronizing switching bridge, first and second bridge circuits, a power inverter circuit(21), first transforming circuits(22,23), a second transforming circuit, and a feedback control circuit(25). The synchronizing switching bridge has a soft switching function. The first bridge circuit and the synchronizing switching bridge organize a first full-bridge inverter circuit. The second bridge circuit and the switching bridge organize a second full-bridge inverter circuit. The power inverter circuit converts inputted electrical signal to an AC signal. The first transforming circuits are electrically connected to the first full-bridge inverter circuit and convert inputted AC electricity into an AC signal to drive a light source. The second transforming circuit is electrically connected to the second full-bridge inverter circuit and converts inputted AC electricity into an AC signal to drive the light source.
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