Amateur Extra Class: 2020–2024
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E6B04:

What type of semiconductor device is designed for use as a voltage-controlled capacitor?

  1. Varactor diode
  2. Tunnel diode
  3. Silicon-controlled rectifier
  4. Zener diode
E6B01 E6B02 E6B03 E6B04 E6B05 E6B06 E6B07 E6B08 E6B09 E6B10 E6B11