| 摘要 |
Disclosed is a power supply device driving lamp(s). An electrical isolation driver generates at least one switch signal according to at least one control signal. The control signal and the switch signal are electrically isolated from each other. A switch unit receives a voltage from a DC power source and switches the voltage to an oscillation signal. An electrical isolation transformer has a primary side and a secondary side. The primary side is coupled to the switch unit and receives the oscillation signal. The secondary side outputs an operating signal to drive the lamp. A controller generates the control signal according to a feedback signal indicating the electrical states of the lamp. The DC power source, the switch unit, and the primary side are coupled to a first ground. The secondary side and the controller are coupled to a second ground.
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