Today’s radio devices don’t use variable capacitors at all, since everything is digitally tuned, which has driven the price of variable capacitors way, way up, since they’re now a niche product.

air variable capacitor 2 Articles . Teardown: Analog Radionic Analyzer. November 9, 2021 by Tom Nardi 67 Comments ...

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 ...

The capacitor Q is in the 20 to 35 range depending on frequency with a voltage capability up to 30 V peak RF. Inputting a 5-bit word changes the capacitance. Switching time is 12 µs with a 10-µs ...

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 ...

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 ...

Micromachined RF capacitors are electrically variable Steve Bush Philips’ researchers have micromachined electrically variable RF capacitors. The devices, which are the microscopic equivalent of ...

The first British commercially available high-vacuum variable capacitors have been announced by the English Electric Valve Co. So 64 years ago, started a story in Electronics Weekly’s edition of March ...

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 ...