My latest video gives the basics of the varactor, or varicap diode. It discusses a little of the theory, and shows measurements of capacitance vs. reverse bias voltage. Finally, an example of how they can be used is shown, using a voltage controlled oscillator example:

http://www.youtube.com/watch?v=icw8terKP-M

 

good one. Thanks for sharing.

 

Your video is well done.