Amplifier characteristics at low frequencies, with particular reference to a new method of frequency compensation of single stages

The paper deals with frequency characteristics of tetrode, pentode and triode amplifiers as determined by the impedances of the electrode supply circuits and interstage coupling circuits. Methods of complete compensation of the frequency characteristics due to these circuits are developed for single stages or single coupling circuits. These cases are of particular interest in the output stages of television receivers where the d.c. component of the signal is required.