Tuesday, January 24, 2012

High resolution digital capacitance meter

This digital cap. meter from RomanBlack provides capacitance measurements ranging from 0 pF to 50 uF with a resolution of 0.01 pF. It uses the on-chip analog comparator of PIC16F628 microcontroller as an oscillator whose frequency is controlled by an external resistor and a capacitor (to be measured). Since the resistor is fixed, the capacitance value can be determined by measuring the frequency of oscillation.

The other features are it does not require any external calibration and it can do auto-zeroing by simply pressing an external push switch.

3 comments:

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Spectra Symbol said...

This is great help in electrolytic capacitor production.

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