Low noise amplifier

Details Low noise amplifier Low noise amplifier

1975-06-26

1976-05-18

Mullins, James B.

Amplifiers

Hum or noise or distortion bucking introduced into signal...

330 25, 330 38M, 330 85, H03F 126

Patent

active

039581853

ABSTRACT:
An amplifier particularly suited for use as a sense amplifier for the detection of magnetic bubble domains in a magnetic bubble chip. A feedback loop is used to reduce D.C. offset of the input and output signals. Noise unavoidably introduced into the feedback loop is cancelled upon input of the feedback signal into the amplifier. The noise cancellation is effected by the introduction into the amplifier input of another noise signal of equal magnitude and opposite polarity provided by another noise pickup loop separate from the feedback loop.

REFERENCES:
patent: 3740659 (1973-06-01), Matsushima et al.

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