How to test an unmarked capacitor?


Is it possible to test an unmarked capacitor for "uf" and "vdc" specifications using a hand held fluke meter?
jj2468

Showing 1 response by aball

Nearly all Flukes will measure capacitance with surprisingly good accuracy (especially the new 1xx series). You can measure the value in the circuit in only limited circumstances - but to avoid a lot of EE blather, the short answer is you need to have it disconnected from the circuit.

However, you cannot measure its voltage breakdown. I can guess at electrolytics just by looking because I am super familiar with them but I would not advise you to attempt it. A mistake would be very costly to your equipment.

Arthur