Device for driving light source module

Details Device for driving light source module Device for driving light source module

2006-12-28

2009-02-17

Vu, David Hung (Department: 2821)

Electric lamp and discharge devices: systems

Pulsating or a.c. supply

Transformer in the supply circuit

C315S247000, C315S274000, C315S307000

Reexamination Certificate

active

07492107

ABSTRACT:
A driving device for driving a light source module (47) includes a PFC circuit (42), a power stage circuit (44), an isolation transformer (T1), an inverter circuit (45) and a PWM controller (46). The PFC circuit converts a received AC signal to a DC signal. The power stage circuit is connected to the PFC circuit, for converting the DC signal to another AC signal. The isolation transformer has a primary winding and at least one secondary winding. The primary winding of the isolation transformer is connected to the power stage circuit, for isolating the received AC signal from the light source module. The inverter circuit is connected to the secondary winding of the isolation transformer, for converting an AC signal output from the isolation transformer to an appropriate signal. The PWM controller is connected to the power stage circuit, for controlling output from the power stage circuit.

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