PN Junction Diode-Basic yet Crucial Topic to Learn by Electronics Engineers Tech job aspirants prefer to pursue B.E. in Electronics stream should definitely possess detailed knowledge of the most basic topic referred as diodes or semi conductor diodes. Diode is a special type of electronic device available with two different electrodes called as cathode and anode. Majority of diodes comprise of semiconductor materials, like selenium, germanium and silicon. Even professionals sometime choose to design diodes with the help of metallic electrodes placed inside the chamber filled or evacuated with the help of pure and elemental gas at the low pressure. After this, while studying about the applications of semiconductor diodes from tech institutes of India, like for instance engineering college in Jabalpur, you will be able to know that diodes have their huge applications in the form of complicated and fully functional electronics systems. These are signal limiters, rectifiers, voltage regulating devices, signal modulators, switches, signal mixers, oscillators and signal demodulators.
PN Junction Diode Faculties of basic electronics engineering in Shri Ram Institute of Technology teach different concepts related to PN junction diode with the help of semiconductor technology. According to this technique, PN junction diode or the basic form of diode has obtained its name from the PN junction type of semiconductor. As per the nature of this type of diode, it only allows flow of current in a single direction. However, this type of electronic device also possesses few additional properties, which an individual can use for accomplishment of various innovative applications. These applications may range from emission of light to its detection, variable value of capacitance and voltage regulation. Theory of the Diode Theory behind semiconductor diodes involve the use of basic semiconductor ideas and their respective applications into the junction in between two different types of semiconductors as p-type, in which formation of charge carriers take place with the help of holes and n-type, where electrons serve as suitable charge carriers.
Terminals of the Diode As the name implies, PN junction type of semiconductor diode is available with two different terminals. These are cathode and anode. Whenever you connect the diode into a circuit, you will find conventional flow of current across it starting from anode and moving towards the cathode. Since, diode is one-way device; you cannot expect the flow of current in opposite direction.
Characteristic Curve PN Junction diode possesses an interesting type of characteristic curve as highlighted in this blog post. Here, current is blocked while moving in the reverse direction and in few stages, it breaks down. On the other side, in case of forward direction, flow of current takes place after exceed of turn-on voltage.