February 17, 2014

FCC Technician Exam Question Of The Day (T6B02)

Q) What electronic component allows current to flow in only one direction?

A) Diode

NJ2X Notes:
There are many different varieties of diodes including:
  • Junction diode
  • Zener diode
  • Tunnel diode
  • Schottky diode
  • Varactor diode
  • Diac
  • Triac
  • SCR
  • Light emitting diode (LED)
  • Photodiode
  • Pin diode
Schematic symbol for an light emitting diode (LED)