We’re talking of course about the air-dielectric variable capacitor, the tuning element for millions of radio receivers back in the day but now long ago replaced by much flimsier polymer ...

for single-phase DC-AC converters. This innovative technology employs a high-frequency planar transformer to eliminate the ...

Capacitors play three important roles in an electronic circuit ... Common applications include turning alternating current (AC) to direct current (DC), isolating signals from a supply, and mixing ...