Diode is a two-terminal electronic component used in electrical circuits to conduct electricity, mainly in one direction. It is also used to protect circuits by limiting the voltage, and also for transforming AC current into DC current. Semiconductors like silicon and germanium are commonly used for manufacturing diodes. Its two terminals are known as Anode or Positive Terminal, and Cathode or Negative Terminal. The conventional current moves from in the direction of Anode to Cathode. When the anode voltage is more positive than cathode voltage, the diode is called forward-biased. Likewise, when cathode voltage is more positive than anode’s, the diode is said to be reverse-biased.