PN-Junction Diode Characteristics

Forward Bias --- External battery makes the Anode more positive than the Cathode --- Current flows in the direction of the arrow in the symbol.
Reverse Bias --- External battery makes the Cathode more positive than the Anode --- A tiny current flows opposite to the arrow in the symbol.

Series-Connected Diodes

Use 2 diodes in series to withstand higher reverse breakdown voltage.
Both diodes conduct the same reverse saturation current, Is.

Diode Characte ....etc

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The Junction Diode
 In electronics, a diode is a component that restricts the direction of movement of charge carriers. Essentially, it allows an electric current to flow in one direction, but blocks it in the opposite direction. Thus, the diode can be thought of as an electronic version of a check valve. Circuits that require current flow in only one direction will typically include one or more diodes in the circuit design.
Short history
 Thermionic and solid state diodes developed in parallel. The ....etc

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explain in detail about the p-n juncion diode and viva questions related to p-n junction diode








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Fabrication of P-N JUNCTION DIODE



BASIC SEMICONDUCTOR
1.1 Semiconductor:-
A semiconductor is a material that has an electrical conductivity between that of a conductor and an insulator. Conductors have very low resistivity (10-2 to 10-8 Ωm) insulator have very high resistivity (>10-2 Ωm), while semiconductors have intermediate values. Semiconductor has resistivity values of order 105 to 100 Ωm.
A semiconductor, such as silicon, has properties ....etc

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