The most difficult to source part for these radios is a variable capacitor, and not finding one in his parts bin, [Jezan] decided to make his own. This variable capacitor comes directly from a ...

They are still made, but they’re not cheap and they won’t appear so readily in your junk box any more. Fortunately a variable capacitor is a surprisingly simple device, and one you can make ...

The gradient of this graph is equal to the capacitance of the capacitor. \(C= \frac{Q}{V}\) And the area under the graph is the energy stored by the capacitor.

A capacitor made out of the precious metal tantalum. The silver-gray tantalum beads, in the form of compacted powder, can store a lot of charge relative to their mass. This enables smaller ...

Did Apple really fit a capacitor backward on the Mac LC III? A multimeter-wielding retro fan has confirmed that, yes – somebody made a mistake decades ago, and a capacitor ended up installed the ...