Variable Capacitance Diode Symbol

The varactor diode or varicap diode is shown in circuit diagrams or schematics using a symbol that combines the diode and capacitor symbols.

Variable capacitance diode symbol. The varactor diode is manufactured in such as way that it shows better transition capacitance property than the ordinary diodes. Typical voltage capacitance curve for a varactor diode varactor or varicap circuit symbol. This symbol represents a variable capacitance whose capacitance can be varied during normal operation. The varactor diode is also known as the varicap voltcap voltage variable capacitance or tunning diode.

In this case the c for capacitance is actually the capacitance of d the varicap diode. The depletion layer appears in the p n junction when a diode is reverse biased. To tune a radio therefore they are sometimes called tuning capacitors or as a variable reactance e g. A variable capacitance diode is a type of diode that uses the capacitance characteristics of the depletion layer.

In electronics 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. Variable capacitance diode varicap diode also called varactor diode a special type of semiconductor diode it is designed to exploit the changes in voltage dependent capacitance of a reverse biased p n junction therefore its ability to use junction barrier capacity has been improved. In the circuit the varicap diode is reverse biased by a voltage source v bias through resistor r 3. Varactor diode is also sometimes referred to as varicap diode tuning diode variable reactance diode or variable capacitance diode.

The voltage dependent device means the output of the diode depends on their input voltage. The varactor diode is used in a place where the variable capacitance is required and that capacitance is controlled with the help of the voltage. The capacitance is varied by increasing or decreasing the effective area between the plates that effects the capacitance of the capacitor. Variable capacitors are often used in l c circuits to set the resonance frequency e g.

A varactor diode also called varicap vvc voltage variable capacitance or tuning diode is a type of semiconductor diode which features a variable voltage dependent capacitance on its p n junction when the device is reversed biased. They are used in lc tuning circuits. Varicap diodes are also called varactor diodes and are defined as whose internal capacitance. In this way it is obvious that it is being used as a variable capacitor rather than a rectifier.

A variable capacitor is a capacitor whose capacitance may be intentionally and repeatedly changed mechanically or electronically.