What is a Diode?

Diode is a compound word, “di” meaning two and “ode” meaning electrode.

Notes

• two ends, anode and cathode
• Will only allow current to pass in one direction
• Will allow current to flow when the negative end is connected to the cathode and the positive to the anode.(Forward bias) In the opposite orientation, it is a insulator(reverse bias).
  • The diode is a pn junction. At the pn junction a depletion region. Some of the electrons from the N-type filled the holes of the P-type.