Offset control in autozeroing circuits for analog-to-digital con

Details Offset control in autozeroing circuits for analog-to-digital con Offset control in autozeroing circuits for analog-to-digital con

1974-12-18

1976-05-18

Miller, Charles D.

Communications: electrical

Audible indication

Percussion-type sound producer

340347AD, 340347CC, H03K 1320

Patent

active

039582361

ABSTRACT:
A dual slope analog-to-digital converter, which has an autozeroing circuit for cancelling out integrator and detector offset and drift, is additionally provided with a circuit for injecting a voltage of selected polarity and magnitude to offset the input voltage of the converter such that the input voltage can be measured with respect to a nonzero reference line.

REFERENCES:
patent: 3541446 (1970-11-01), Prozeller
patent: 3566265 (1971-02-01), Reid
patent: 3566397 (1971-02-01), Walton
patent: 3747089 (1973-07-01), Sharples

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