Voltage Controlled Capacitors – Varactor Diodes

This electronics video tutorial provides a basic introduction into varactor diodes also known as varicaps which can behave as voltage controlled capacitors. The junction capacitance of the diode is inversely related to the reverse voltage applied to it. Varactor diodes are very useful in tuned circuits and voltage controlled oscillator circuits.

What Is a Diode?

Light Emitting Diodes:

Zener Diodes:

Varactor Diodes – Voltage Capacitors:

Generate Electricity With Crystals!

Boost Converter DC to DC Circuit:

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Simple Voltage Booster Circuit:

100,000V High Voltage Voltmeter:

Buck Converter Circuit:

Low Pass and High Pass Filters:

RC Band Pass Filters:

RLC Band Stop and Band Pass Filters:

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NPN and PNP Transistors:

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Varactor Diodes: https://amzn.to/2TewtbE

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