- on Miscellaneous Electronics
- Published in issue 6/2014 on page 66
Weird Component #6
If you’ve ever touched any RF circuitry there’s a very good chance it contained at least one variable capacitor in its voltage controlled oscillators (VCOs) and filter circuits. They used to use mechanical variable capacitors but now varactor diodes, also known as varicaps, are preferred because of their small size, high performance and excellent tracking ability.