Amplification

Abstract

Chapter 4 described a number of components in which the through current between two electrodes is controlled by the voltage applied at a third electrode. These components included both types of transistor and single and multigrid valves, including triodes, tetrodes and pentodes. It was said then that any component of the type described in which one electrode voltage had more effect on the current than another electrode voltage, is capable of amplification. This chapter is concerned with detailed circuits involving active and passive components which are used for amplification.