A Semiconductor Video Output Amplifier for a Red Blue Green Large Screen Color Television Receiver

A transistorized, direct current coupled red blue green cathode ray tube drive circuit for use with an integrated circuit color demodulator is described. This circuit meets the requirements of temperature stability, gain, bandwidth and ease of cathode ray tube gray scale tracking adjustment necessary in a high quality large production color television receiver. Special attention is given to the uniformity of frequency response of the three outputs, as well as to the manner in which gray scale tracking is accomplished.