Basically, it’s piece of rock and it’s an insulator. Its schematic symbol is shown in Figure SB1. Varactor (varicap) circuit symbol. How does a varactor diode work? To form the PN junction that makes ...

Varactor Diodes Work In Low Voltage Systems Nov. 1, 2002 With a tuning range from 0.5V to 2.5V, the ZV950 series of hyperabrupt varactor diodes meets the requirements of 3V frequency control and ...