Keywords: , Diodes - Variable Capacitance (Varicaps, Varactors)
Description: By screening diodes - variable capacitance (varicaps, varactors) with . the eligible records: 1220
Count: 1220
Answer: Diode capacitance consists of 2 components. Junction capacitance and diffusion capacitance. Junction capacitance comes from the depletion region. There is junction capacitance in both forward and reverse bias.
Answer: A varactor diode is designed to store electric charge not to conduct electric current. So varactor diode should always be operated in reverse bias. When a reverse bias voltage is applied, the electrons from n-region and holes from p-region moves away from the junction.
Answer: The varicap was developed by the Pacific Semiconductor subsidiary of the Ramo Wooldridge Corporation who received a patent for the device in June 1961.
Answer: The symbol of the varactor diode is similar to that of the PN-junction diode. The diode has two terminals namely anode and cathode. The one end of a symbol consists the diode, and their other end has two parallel lines that represent the conductive plates of the capacitor.
Answer: A varactor diode is designed to store electric charge not to conduct electric current. So varactor diode should always be operated in reverse bias. When a reverse bias voltage is applied, the electrons from n-region and holes from p-region moves away from the junction.
Answer: Varactor or varicap diodes are used mainly in radio frequency or RF circuits to provide voltage controlled variable capacitance. These electronic componenta can be used in a whole variety of ways where a capacitance level needs to be controlled by a voltage.
Answer: Varactor diodes, also called varicaps, are semiconductor devices that behave like variable capacitors. When reverse-biased, they have a capacitance that varies with an applied voltage. They are most often used in devices that require electronic tuning, such as radios.