A power supply apparatus and method of regulating is provided. A clock generator circuit is configured for generating a clock signal at a predetermined frequency. An amplifier circuit is coupled with the clock generator circuit. The amplifier circuit includes a gain circuit coupled with the clock generator...http://www.google.es/patents/US8040117?utm_source=gb-gplus-sharePatente US8040117 - Closed loop negative feedback system with low frequency modulated gain
Closed loop negative feedback system with low frequency modulated gain
