AN Integrated Sync Circuit for TV Receivers

A novel monolithic IC for sync circuit comprised of a sync amplifier, a horizontal oscillator with AFC, and a vertical oscillator has been developed. To avoid the use of expensive inductive components, both horizontal and vertical oscillator circuits are composed of multivibrators. The 55 x 67 mil chip, containing 21 transistors, 14 diodes and 34 resistors, is sealed in a conventional 14-pin dual-in-line package. This IC for sync circuit can save 26 discrete components and can be used in all screen sizes of TV receivers. Use of this IC in production of monochrome TV receivers has resulted in improved performance, greater reliability and reduced assembly cost.