Long-term integrator

Details Long-term integrator Long-term integrator

1992-06-08

1993-12-21

Nguyen, Long T.

Boots, shoes, and leggings

G06F 15328

Patent

active

052726584

ABSTRACT:
A long-term integrator, e.g. for integrating the voltage signal from a coil measuring magnetic induction, can include a push-pull modulator followed by an analog-digital converter, a digital signal processor and a digital analog converter in cascade. Offset voltage in the analog-digital converter or an amplifier upstream thereof is nullified in the digital signal processor by modulating it as the measured signal is demodulated, thereby balancing out alternate polarity portions of the offset voltage.

REFERENCES:
patent: 4023019 (1977-05-01), Leibowitz et al.
patent: 4692890 (1987-09-01), Arseneau

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