Sound amplifier circuit

Details Sound amplifier circuit Sound amplifier circuit

1977-04-06

1978-09-05

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including push-pull amplifier

179 1P, 330149, H03F 326

Patent

active

041123859

ABSTRACT:
A series circuit comprising a detection transistor and detection resistor is connected in parallel with a decoupling capacitor connected to a signal input terminal of a class B push-pull amplifier. During a power supply OFF period the decoupling capacitor is discharged through the detection transistor and resistor and a drive transistor is turned ON by a voltage generated across the detection resistor, thereby preventing generation of a residual sound and pop sound.

REFERENCES:
patent: 3889202 (1975-06-01), Suzuki

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