Inductor whistling refers to the high-frequency oscillation sound that occurs when using inductors in a circuit
When there is resonance between inductors and capacitors in a circuit, it can cause high-frequency oscillations, resulting in whistling sounds.
The varactor diode (Variable Capacitance Diode), also known as a variable capacitor diode,
Excellent RF performance: Varactor diodes exhibit outstanding characteristics in high-frequency ranges,
Temperature control: The capacitance value of the varactor diode will fluctuate with temperature changes.
Varactor diode is a type of capacitor diode, which is unique in that its capacitance changes with the reverse bias voltage.