In an attempt to recapture a little of that magic, [Jeremy S. Cook] came up with this home-brew variable tuning capacitor. The frame is built mainly from 3D-printed parts, which supports a shaft ...

Fortunately a variable capacitor is a surprisingly simple device, and one you can make yourself if you are of a mind to do so.

Electronically-variable capacitors, whether used for T&M or in an end circuit, usually have a maximum capacitance of a few hundred picofarads, and a limited adjustment range. This Design Idea ...

LONDON — WiSpry Inc. (Irvine, Calif.), a provider of tunable radio frequency (RF) semiconductor products for the wireless industry, has announced that its patent application for microelectromechanical ...

How do you implement a variable capacitor these days? Mechanical caps are out. That leaves varactors, which work fine but require higher voltages that often are not available, and their response ...

Quadintel’s recent global “ Thin-Film Dielectric Variable Capacitor Market “ research report gives detailed facts with consideration to market size, cost revenue, trends, growth, capacity, and ...

Jo opened Jennings Radio and shortly thereafter created the first vacuum dielectric variable capacitor. These capacitors were used to help tune the frequency needed to operate the radio towers across ...

The capacitors are made by under-etching an area of the chip’s top metal layer to create a beam that moves up and down through electrostatic attraction when a voltage is applied. This can be used as a ...