Digital Vacuum Gauge

Posted on Oct 10, 2012

A bridge circuit is used to produce a signal from the output of vacuum sensor IC1. IC2b provides about a 0.2 V offset

Digital Vacuum Gauge
Click here to download the full size of the above Circuit.

for IC4, the A/D converter. IC2b and d are voltage followers that drive differential amp IC2a. The output of this circuit is used to drive IC4 and IC1, the display drivers.

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