Method of test capacitors

Measure test paper and ceramic capacitors.

Capacitor paper and ceramic capacitors often damaged in a short or leakage detectors to detect leaks or short freedom we observed the following picture.

Measured convergence test paper or ceramic capacitors .

The image on the ceramic capacitor test measurements, there are three capacitors C1, C2 and C3 have equal capacitance, which capacitor C1 is good, the capacitor C2 and C3 detectors from being short.

When measured from C1 (Capacitor good) to a slightly larger needle and then back to previous position. (Note the convergence is too <1nf>
Measurement test from chemical
Rarely converge chemical detectors or as short paper, but them in a dry or damaged (dry chemical inside the dielectric layer) as the capacitance of the capacitor is reduced, to check convergence and modernization, is often compared degree of convergence with a larger load better convergence with the same capacitance, the image below illustrates the steps to check convergence goods

Measured convergence test chemical
To check the chemical capacitor C2 value is 100μF capacitance can be reduced or not, we still have to use capacitors C1 and the capacitance measurement comparison.
To clock in scale from x1Ω to x100Ω (larger capacitance is to lower the elevator)
Measure and compare the two capacitors of larger loads, then we reverse that sticks several times.
If two capacitors larger load capacitor is equal to better test, we found convergence on larger loads less than the C2 capacitor C2 so on was dry.
Where the needle back up without the capacitor detector.
Note: If the test capacitor directly on the circuit, we need to empty vacuum in a vacuum capacitor from the circuit, then test as above