Patent ID: 8598808

Claim:
A power source comprising: a source of direct current; a power factor corrector controller; an electronically controlled switch responsive to said power factor corrector controller; a first inductor serially connected with said electronically controlled switch and arranged to pass a direct current from said source of direct current there through when said electronically controlled switch is closed and to not pass the direct current from said source of direct current when said electronically controlled switch is open; a second inductor magnetically coupled to said first inductor and coupled to provide power to a load in a flyback arrangement; a third inductor magnetically coupled to said first inductor, a first end of said third inductor arranged to provide a representation of the voltage level of said source of direct current when said electronically controlled switch is closed, and to provide a representation of the voltage level of said power provided to the load when said electronically controlled switch is open; and an off time control circuit in communication with said power factor corrector controller and with said first end of said third inductor, said off time control circuit arranged to provide an off time to said power factor corrector controller where said electronically controlled switch is open, the provided off time increases responsive to an increase in the representation of the voltage level of said source of direct current provided by said first end of said third inductor and increases responsive to a decrease in the representation of the voltage level of said power provided to the load provided by said first end of said third inductor.