Patent attributes
A lamp driving device for driving a lamp. A feedback circuit includes a voltage falling unit and a rectification circuit. The voltage falling unit provides a low voltage signal in response to a first DC power signal, a first AC power signal or a first driving power signal. The rectification circuit rectifies the low voltage signal to generate a feedback signal. The rectification circuit provides the feedback signal. A controller provides a control signal in response to the feedback signal. A first DC-to-AC converter transforms the first DC power signal to the first AC power signal in response to the control signal. A first voltage raising unit raises the voltage of the first AC power signal to generate the first driving power signal. The first raising unit provides the first driving power signal to a first end of the lamp, so that the lamp achieves the desired brightness stably.
