Abstract: A gain control circuit utilizes a PWM having its transfer function characteristics determined by a ramp and a DC supply voltage. An input signal modulates the PWM and an integrating circuit at the output of the PWM recovers a replica of the input signal. Changing one or more of the transfer function characteristics of the PWM results in a change in the amplitude of the recovered replica of the input signal. Changing the ramp frequency may also be used to effect gain control. An arrangement in a television deflection circuit with raster correction is shown.

Abstract: A voltage regulator for a flyback-type high voltage supply having: a pulse transformer with its secondary interconnected in series with the primary of a flyback transformer; a control circuit for sensing the generation of a flyback pulse, a reference voltage, and a feedback voltage signal appearing at the output of the flyback transformer; and a switch for selectively applying energy to the primary of the pulse transformer while uniformly maintaining the flow of current through the primary of the flyback transformer.

Abstract: A voltage regulator for a flyback-type high voltage supply having: a pulse transformer with its secondary interconnected in series with the primary of a flyback transformer; a control circuit for sensing the generation of a flyback pulse, a reference voltage, and a feedback voltage signal appearing at the output of the flyback transformer; and a switch for selectively applying energy to the primary of the pulse transformer while uniformly maintaining the flow of current through the primary of the flyback transformer.