4

Capacitance Measuring Circuits

The sources of the following circuits are contained in the Sources section, which begins on page 217. The figure number in the box of each circuit correlates to the source entry in the Sources section.

ACCURATE DIGITAL CAPACITANCE METER

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Fig. 4-1 ELECTRONIC ENGINEERING

The principle of operation is counting the pulse number derived from a constant-frequency oscillator during a fixed time interval produced by another lower frequency oscillator. This oscillator uses the capacitor ...

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