Patent ID: 7514878
Filing Date: 2009-04-07
Classification: H05B

Abstract:
1. A circuit, comprising: a power source coupled to a center tap of a primary winding via an inductor, a first end of the primary winding being coupled to a second end of the primary winding via a capacitor; a first node being coupled to the power source, the first node coupled to both a second node via a first resistor and a third node via a second resistor, the second and third node being coupled via a feedback path; a first transistor having a gate coupled to the second node via a third resistor, a drain coupled to the first end of the primary winding, and a source being coupled to a reference signal, wherein the gate is coupled to the reference signal via a diode; a second transistor having a gate coupled to the third node via a fourth resistor, a drain coupled to the second end of the primary winding, and a source being coupled to the reference signal, wherein the gate is coupled to the reference signal via a diode; and a secondary winding having a first end coupled to a first end of a light source via a capacitor and a second end coupled to a second end of the light source.