According to their characteristics, point contact diodes are classified into forward and reverse characteristics as follows.
In principle, the diode used for detection is used to extract the modulated signal from the input signal, which is called detection.
Modulation diodes usually refer to diodes specifically designed for ring modulation
Varactor diodes are small power diodes used for automatic frequency control (AFC) and tuning.
Zener diode is a product that replaces Zener electronic diode.
Avalanche diode is a transistor that can generate high-frequency oscillations under the action of an applied voltage.
