SIGNAL AMPLIFICATION METHOD AND AMPLIFICATION CASCADE Russian patent published in 2007 - IPC H03F3/02 

FIELD: sound amplification equipment engineering, possible use in power amplifiers and preliminary amplification cascades, assembled using electronic lamps, including vacuum triodes with direct heating.

SUBSTANCE: alternating and constant voltages necessary for operation of vacuum electronic lamp are created by feeding through high frequency transformers from single source of high frequency sine voltage, working frequency of which is beyond limits of possible range of working frequencies of amplified signal. Nominal values and quantities of linear and nonlinear elements in amplifier route are decreased substantially or excluded fully. Also it is possible to use efficient area of direct heating vacuum lamp electrodes maximally with, level of interference is decreased, because parasitic signal in form of background or its harmonics is not added into signal being amplified, and frequency range of signal being amplified is increased.

EFFECT: increased efficiency.

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