Amplifier

Amplifiers – With semiconductor amplifying device – Including particular power supply circuitry

Patent

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Details

330207P, H03F 304

Patent

active

045435391

ABSTRACT:
An amplifier comprises an amplifier circuit for amplifying an input signal and a supply voltage detector for controlling the operation of the amplifier circuit. The supply voltage detector has hysteresis characteristics as to a first threshold voltage and a second threshold voltage which are different from each other in order to detect the magnitudes of the supply voltage. The amplifying operation of the amplifier circuit is controlled as to the start-up and turn-off operation thereof by an output signal of the supply voltage detector.

REFERENCES:
patent: 4320350 (1982-03-01), Drapac

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