Electrolytic Capacitors - dummies

Electrolytic capacitors have a positive and negative side. To tell which side is which, look for a large stripe or a minus sign (or both) on one side of the capacitor. The lead closest to that stripe or minus sign is the negative lead, and the other lead (which is unlabeled) is the positive lead. ...…

Polarity - learn.sparkfun.com

The negative pin of the cap is usually indicated by a "-" marking, and/or a colored strip along the can. They might also have a longer positive leg. Below are 10µF (left) and a 1mF electrolytic capacitors, each of which has a dash symbol to mark the negative leg, as well as a longer positive leg.…

How do i know which side of ceramic capacitor is positive ...

Aug 11, 2007 · I have 2p& (C5), 3n3 332 (C4), 10n 103 (C3), 22n 223 (C2), and 22p (C6) ceramic capacitors for an FM transmitter. How do i tell which sides are positive/negative? There are no markings on them. Both leads are the same length. The only markings are the label of the capacitor and there are some with black on the tips of the capacitor.…

Electrolytic capacitor - Wikipedia

An electrolytic capacitor (occasionally abbreviated e-cap) is a polarized capacitor whose anode or positive plate is made of a metal that forms an insulating oxide layer through anodization.This oxide layer acts as the dielectric of the capacitor. A solid, liquid, or gel electrolyte covers the surface of this oxide layer, serving as the cathode or negative plate of the capacitor.…