Single ended push-pull amplifier

Details Single ended push-pull amplifier Single ended push-pull amplifier

H - Electricity

03

F

330/16

H03F 3/26 (2006.01) H03F 1/32 (2006.01) H03F 3/30 (2006.01)

Patent

CA 1133074

ABSTRACT OF THE DISCLOSURE Two closed loops including a base bias controlling circuit are provided in a single ended push-pull amplifier. The base bias controlling circuit controls base bias voltages of respective transistors constituting the final stage of the push-pull operation so that a pre- determined small amount of collector current flows via each of the collector-emitter paths of the transistors irrespective of the presence and absence of the input signal. Because of the predetermined collector currents, none of the transistors is held at cutoff in operation, thereby preventing the occurrence of the crossover distortion.

317152

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