* Question
| How to easily identify common varactor diodes? |
* Answer
| The varactor diode is a special diode specially designed according to the principle that the junction capacitance of the internal “PN junction” of the common diode changes with the applied reverse voltage.The varactor diode malfunctions, mainly manifested as leakage or poor performance:
(1) When a leakage occurs, the high-frequency modulation circuit will not work or the modulation performance will deteriorate. (2) When the varactor performance deteriorates, the operation of the high-frequency modulation circuit is unstable, and the modulated high-frequency signal is transmitted to the other party and received by the other party to generate distortion. |
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