Abstract: In a television receiver with a drive transformer for the horizontal output stage, the heater voltage for the picture tube is inductively obtained from the drive transformer.

Abstract: A horizontal deflection circuit is disclosed in which the junction point between a bidirectional switch, a trace capacitor, and a retrace capacitor is grounded through a transistor. The latter is controlled by a control voltage for picture-width stabilization and pincushion correction. It may be shunted by a capacitor and a biased diode.

Abstract: The invention relates to a vertical deflection circuit used in television receivers. U.S. Pat. No. 4,048,544 proposes to derive the vertical deflection voltage by feeding the vertical deflection coil with decreasing portions of the horizontal retrace pulse during the first picture half, and with oppositely directed portions increasing from zero during the second picture half. That method involves very short pulse times and, thus, high voltages and currents to generate the desired deflection power. Therefore, fast thyristors with high blocking voltages must be used. According to the invention, the pulses are taken from the horizontal sweep. Thus, they can be longer and, consequently, smaller even at small currents, and complementary transistors can be used as switching means.

Abstract: This TV receiver power supply is of the type wherein power to operate the audio output stage is taken from the horizontal output deflection circuit. To prevent interaction on the high voltage supply when high audio output levels are reached, the invention provides a compensating circuit arrangement which prevents any lowering of the high voltage during high audio peaks. This prevents noticeable changes in the TV picture width during audio peaks.