Patent ID: 8093838
Filing Date: 2012-01-10
Classification: H05B

Abstract:
1. A driving circuit for driving a lamp and capable of preventing the lamp from blasting, comprising: a control circuit module, storing a predetermined setting and comprising an input terminal and an output terminal, a first control signal being generated from the output terminal in accordance with the predetermined setting; a voltage conversion circuit module, electrically coupled to the output terminal of the control circuit module, to receive the first control signal and convert the first control signal into a second control signal; a driving module, electrically coupled to the voltage conversion circuit module, to receive the second control signal and generate a driving signal in accordance with the second control signal to drive the lamp; and a feedback circuit, one end thereof electrically coupled to the input terminal of the control circuit module and another end electrically coupled to at least one of the output terminal of the control circuit module, the voltage conversion circuit module and the driving module, for receiving a feedback signal therefrom, and transmitting the feedback signal to the control circuit module, wherein the control circuit module adjusts the first control signal according to the feedback signal being received from the feedback circuit; wherein a standard control signal is stored in the control circuit module, and the control circuit module compares a duty cycle of the standard control signal with that of the feedback signal to determine whether the feedback signal is essentially consistent with the standard control signal.