It is a tuning signal source that utilizes the variable capacitance characteristics of a varactor to tune the frequency of local oscillation (referred to as local oscillation in television receiver tuners).
Crystal diodes are commonly represented by "D" followed by a number in circuits,
Crystal diodes are commonly represented by "D" followed by a number in circuits,
Crystal diodes are divided into rectifier diodes,
The model naming of crystal diodes consists of five parts:
The water boiling alarm circuit introduced in many magazines generally uses
