Audio frequency power amplifier

Details Audio frequency power amplifier Audio frequency power amplifier

1977-02-11

1978-07-11

Dahl, Lawrence J.

Amplifiers

With semiconductor amplifying device

Including push-pull amplifier

330255, 330267, 330297, H03F 326

Patent

active

041005015

ABSTRACT:
An audio frequency power amplifier wherein an input signal is applied to respective input electrodes of a pair of transistors of the same conductivity type to produce an output signal at an output electrode of one of the pair of transistors. A common electrode of the one transistor is connected with an output electrode of the other transistor and a power from a first D.C. power supply is supplied to the junction thereof through a diode while a power is supplied to a common electrode of the other transistor from a second D.C. power supply having a higher voltage than that of the first D.C. power supply. The other transistor and the diode are alternately rendered conductive and non-conductive in response to the signal level of the input signal, a capacitor is connected to the input electrode of the other transistor, which capacitor is charged during the turn-off of the other transistor whereby the charge is supplied to the other transistor upon turning on of the other transistor to shorten the rise time.

REFERENCES:
patent: 3854057 (1974-12-01), Williams et al.
patent: 3961280 (1976-06-01), Sampei

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