Amplifier circuit

Amplifiers – With semiconductor amplifying device – Including differential amplifier

Patent

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Details

330 85, H03F 345

Patent

active

045104581

ABSTRACT:
An amplifier circuit has an operational amplifier and a negative feedback circuit. An input signal is applied to the non-inverting input terminal of the operational amplifier, whereby a first output signal is provided from the output terminal of the operational amplifier. The first output signal is fed back to the inverting input terminal of the operational amplifier through the negative feedback circuit. The negative feedback signal of the negative feedback circuit is fed back to the inverting input terminal through an impedance converter. Thus, a second output signal of low distortion factor is derived from the output terminal of the impedance converter.

REFERENCES:
patent: 4290024 (1981-09-01), Yokoyama

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