Low current drain amplifier with sensitivity adjustment means

Details Low current drain amplifier with sensitivity adjustment means Low current drain amplifier with sensitivity adjustment means

1975-08-28

1976-11-02

Zazworsky, John

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307230, 328147, 328150, 328162, 328165, H03K 520

Patent

active

039899586

ABSTRACT:
An amplifier circuit for detecting low level signals of positive or negative amplitude, and for producing an output pulse whenever the input signal exceed a predetermined threshold level. A first operational transconductance amplifier is used as an amplifier, followed by a pair of operational transconductance amplifiers employed as comparators. The reference voltage for each comparator is set through a resistive circuit driven by one or more current sources. The design minimizes sensitivity drift by providing for compensation of amplifier offsets with minimal adjustment requirements, and provides broad bandwidth operation with very low current drain.

REFERENCES:
patent: 3579125 (1971-05-01), Lindblad et al.
patent: 3934239 (1976-01-01), Mason et al.

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