Improvements introduced in circuits for television. (Machine-translation by Google Translate, not legally binding)

摘要

Improvements introduced in television circuits constituted by an amplifier of f.i. Of video, a circuit of c.a.g. Of f.i. And a circuit of c.a.g. Of r.f. Essentially characterized in that according to the same on a ceramic substrate in which conductive, resistive and insulating paste compositions are printed and on which discrete components are welded, an amplifier of f.i. Three steps of silicon npn transistors, the first of which controlled with its base attached to the circuit of c.a.g. Of f.i. And its emitter to ground through a cell r.c. While both the emitter of the second transistor and that of the third are connected to ground, verifying a feedback between the base and the collector of each of the latter by means of a resistance for thermal stability; the coupling between said first transistor and said second transistor is performed by an autotransformer buffered by a resistor, while the coupling between said second transistor and the third is performed by a circuit r.c. (Machine-translation by Google Translate, not legally binding)