Current and voltage autozeroing integrator

Details Current and voltage autozeroing integrator Current and voltage autozeroing integrator

1977-09-23

1979-08-07

Zazworsky, John

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307229, 328162, G06G 718

Patent

active

041639472

ABSTRACT:
An autozeroing integrating circuit which compensates for input offset voltages and input current to the integrator differential amplifier. During an integrate period, an input signal is integrated in the conventional manner, and a voltage is accumulated on the integrating capacitor. The integrator may be reset to discharge the integrator capacitor in preparation for a new integration. During reset mode, the integrator automatically corrects for input offset voltage errors in the amplifier by storing the offset voltage. During an autozero mode, a charge is stored on a capacitor which provides via a buffer amplifier a current which compensates for the current flowing into the input of the integrator.

REFERENCES:
patent: 3660769 (1972-05-01), Jordan et al.

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