What are varactor / varicap diodes?

ABCs of Varactors - Rufus Turner - What are varactor / varicap diodes?

Reading time: 2 minute The varactor diode or varicap diode is a special diode that has the characteristic of modifying its internal capacity as the voltage applied to the terminals varies. The advantage of the varivap diode (varactor) over a trimmer or a variable capacitor is that we can make very fine adjustments and we can get even very small capacities.

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125 Transistor Projects - Rufus Turner

125 Transistor Projects - Rufus Turner - What are "choke" filters?

Reading time: 3 minute These circuits are offered to the student who wants to configure and test typical circuits with their own instructions, to the designer who wants functional blocks ready to be incorporated in a system and to the hobbyist whose amateur interests will be served by preset, pre-tested circuits.

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