Power amplifier having a standby circuit

Details Power amplifier having a standby circuit Power amplifier having a standby circuit

1990-11-30

1992-01-14

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including particular biasing arrangement

330267, 330273, 330297, H03F 326

Patent

active

050814265

ABSTRACT:
A power amplifier having a standby switch according to the present invention comprises an amplifier circuit, a bias circuit serving as a bias source of the amplifier circuit a detector circuit for detecting a variation in a power source voltage to turn on or off the standby switch, a standby circuit for extinguishing a waveform of an output voltage of the amplifier circuit the moment that the standby switch is turned off, and a delay circuit for cutting off the bias source of the amplifier circuit after a lapse of a predetermined time period after the standby switch is turned off.

REFERENCES:
patent: 4853648 (1989-08-01), Imanishi

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