A varicap diode, varactor diode, variable capacitance diode, variable reactance diode or tuning diode is a type of diode designed to exploit the voltage-dependent capacitance of a reverse-biased p–n junction.

Jul 23, 2025 · A varactor diode, also known as a Varicap or volt-cap, is a type of PN junction diode primarily utilized in the reverse-biased mode. It is a device whose capacitance varies with the …

Mar 25, 2024 · What is a Varactor Diode? A Varactor Diode (also known with the names Varicap Diode, Varactor Diode, Tuning Diode) is a p-n junction diode which acts as a variable capacitor under …

A Varactor diode is a PN junction diode whose capacitance varies with the change in applied reverse voltage. The internal capacitance is actually the junction capacitance that depends on the width of …

What is a Varactor? A varactor is a diode whose junction capacitance can be altered with an applied reverse voltage. For this reason, a varactor is also called a variable capacitance diode (also it's …

A varactor diode is a specially manufactured P–N junction with a variable concentration of impurities in its P-type and N-type materials. In a conventional silicon diode, doping impurities are usually …

Apr 25, 2024 · What is a varactor diode? Variable capacitors like air capacitors and trimmer capacitors are adjustable manually. In contrast, the capacitance of a varactor diode is controlled by a reverse …

Explore the varactor diode, its voltage-dependent capacitance, applications in tuning circuits, and use as a frequency multiplier. Learn about its operation and circuit examples.

Feb 24, 2012 · A varactor diode is defined as a reverse-biased p-n junction diode whose capacitance can be varied electrically. These diodes are also known as varicaps, tuning diodes, voltage variable …

Junction of lightly doped n-type semiconductor with a metal electrode. The junction of a doped semiconductor (usually n-type) with a metal electrode can produce a very fast-switching diode which …