Transistor video amplifier and line time-base synchronization circuits for television receivers

The principles of circuit design for transistor video amplifiers for use in television receivers are illustrated by a design using a transistor type AF117 as an emitter-follower driving an AF118 video output stage. The problems arising from the use of transistors in the synchronizing and line oscillator circuits are discussed. Complete synchronizing pulse separator, flywheel and line-drive circuits are described for both 405- and 625-line receivers. Some alternative circuit techniques are also considered.