what is a Feed thro capacitor

Current.

Filtering.:)

A feedthrough capacitor is a capacitor that goes through a sheet metal. It is commonly used to feed a wire through an enclosure while filering the signal with a cap.

Rene

They are used to pass a low frequency signal (like automatic gain or frequency control) or power supply voltages through a metal shield container. They contain a small capacitor between the feed through pin and the surrounding metal shell that gets soldered to the shield. A capacitor made this way has a very high self resonant frequency, compared to the same value soldered to a PCB.

for capacitor measurement is a good solution

mires

"mires" a écrit dans le message de news: snipped-for-privacy@e56g2000cwe.googlegroups.com...

You probably never used it to measure your communication capacity, which is essentially zero, if not negative.