Patent ID: 8492998
Filing Date: 2013-07-23
Classification: H05B

Abstract:
1. A circuit which supplies power to a drive circuit which drives light-emitting elements, the drive circuit including a control circuit which controls light-emitting elements, the circuit comprising: a charge storage element having a first charge storage element terminal and a second charge storage element terminal, the first charge storage element terminal being connected to the light-emitting elements; a power switching element configured to include a first power switching element terminal connected to the second charge storage element terminal and a second power switching element terminal connected to a power supply terminal of the control circuit; a second switching element configured to include a first switching element terminal connected to a node between the charge storage element and the power switching element; and a third switching element configured to include a second switching element terminal connected to the light-emitting elements and a third switching element terminal connected to the control circuit and configured to receive a drive signal.