Familarization of electronic component – Diode

Objective:

How to use the electronics component diode and measures the forward and reverse voltage.

Theory:

A diode is specialized electronic component with electrodes called anode and cathode. Most diodes are made with semiconductor materials such as Si, Ge, Se. Diode can be used as rectifiers, signal limiters, voltage regulators, switches, signal modulators, signal mixers, oscillators. The fundamental property of a diode is its tendency to conduct electric current is only one direction. When cathode is (-ve) charged, at a voltage greater than a certain minimum called break over, the current flows through diode. This voltage is “0.4V for Si”, “0.3V for Ge”, “1V for Se” devices. Semiconductor diode can be designed to produce direct current when visible light, UV light strikes them.

Apparatus Table:

SL.NONAME OF APPARATUS USEDQUANTITYMAKER’S NAMERANGE
1Multimeter
2Ammeter
3Bread board
4diode
5Connecting wires

Observation Table:    

SL.NODIFFERANENT TYPE OF DIODESFORWARD VOLTAGE(Volt)FORWARD RESISTANCE(Ω)REVERSE VOLTAGE(Volt)REVERSE RESISTANCE(Ω)
1Normal diode
2Zener diode
3LED

 Conclusion:

A diode is an useful electronic device that allows an electric current to pass in one direction while blocking current in opposite direction.

 

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