Princippet om at måle kapacitans med et multimeter
I det billige multimeter opnås kapacitansmålingen ved at konvertere ladetiden for den målte kapacitans til en puls gennem tidsbasekredsløbet, integrere pulsen og derefter måle den integrerede værdi.
Slightly better may use quadrature detection, that is, the so-called digital bridge, after measuring the phase difference, use the single-chip microcomputer to calculate the result of the reactance. In addition, the frequency method can also be used to measure the capacitance through the frequency change of the oscillation circuit. C diff -> Freq Diff frequency change can be measured with a counter, or read out with a voltmeter for F ->V konvertering.
