If you’ve seen a big air-variable capacitor, you may have noticed that some of the plates may have slots cut into them. Why? [Mr Carlson] has the answer in the video below. The short answer: ...

Radio experimenters often need a variable capacitor to tune their circuits, as the saying goes, for maximum smoke. In decades past these were readily available from almost any scrap radio, but the ...

Abstract: A novel parallel-plate MEMS variable capacitor with a thin-film vertical comb actuator is proposed. The actuator can vertically displace both plates of the capacitor. Making use of the ...

Advanced Energy Industries has been granted a patent for a variable capacitor bank design. The invention includes a conductive housing, electrical bus, and capacitor modules with switched capacitor ...

Abstract: H-bridge-based single-phase applications have second-order harmonics on the dc-link voltage. Conventionally, the second-order harmonics are filtered by bulky dc capacitors to maintain the ...

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 is ...

This file type includes high resolution graphics and schematics. Cavendish Kinetics now offers a tunable RF micro-electromechanical systems (MEMS) capacitor that lets smart-phone antennas cover a ...