What is PN junction diode explain its characteristics?
A PN Junction Diode is one of the simplest semiconductor devices around, and which has the electrical characteristic of passing current through itself in one direction only. However, unlike a resistor, a diode does not behave linearly with respect to the applied voltage.
What is the most important characteristic of a diode?
Ideal Diodes In an ideal diode, current flows freely through the device when forward bias, having no resistance. This is ideally what should happen, or what we would want to happen, but this is not what will happen. In an ideal diode, there would be no voltage drop across it when forward biased.
What is the significance of PN junction diode?
The PN junction diode is the basic semiconductor diode format. It is used for many forms of rectification for current levels both large and small, as well as high and low voltage levels, and this semiconductor device finds many uses in all manner of electronic circuit designs.
What is the main use of a pn diode and briefly explain how it works?
A diode (PN junction) in an electrical circuit allows current to flow more easily in one direction than another. Forward biasing means putting a voltage across a diode that allows current to flow easily, while reverse biasing means putting a voltage across a diode in the opposite direction.
What is diode characteristics?
Electrical Characteristics of Diodes Basic static characteristics of diodes are the forward voltage VF and forward current IF, and the reverse voltage and current VR and IR. The area surrounded by the orange dashed line in the diagram on the right indicates the usable area of rectifying diodes.
What is VI characteristics of diode?
Volt-ampere (V-I) characteristics of a pn junction or semiconductor diode is the curve between voltage across the junction and the current through the circuit. Normally the voltage is taken along the x-axis and current along y-axis.
What are the characteristics of ideal diode?
Characteristics of Ideal Diode when Forward Biased
- Infinite Amount of Current.
- Zero Threshold Voltage.
- Zero Reverse Leakage Current.
- No Reverse Breakdown Voltage.
- The reason is: The concept of idealizing makes things better.
What are the applications of PN diode?
This action of p-n junction diode enables us to use it as a rectifier.
- Diodes are used in clamping circuits for DC restoration.
- Diodes are used in clipping circuits for wave shaping.
- Diodes are used in voltage multipliers.
- Diodes are used as switch in digital logic circuits used in computers.
What is pn junction diode explain its working and characteristics curves in forward and reverse biased condition?
The voltage applied determines one of three biasing conditions for p-n junction diodes: There is no external voltage provided to the p-n junction diode while it is at zero bias. Forward bias: The p-type is linked to the positive terminal of the voltage potential, while the n-type is connected to the negative terminal.
What is diode and explain the VI characteristics of diode?
What are the forward characteristics of diode?
Forward Characteristic When a diode is forward biased it conducts current (IF) in forward direction. The value of IF is directly dependent on the amount of forward voltage. The relationship of forward voltage and forward current is called the ampere-volt, or IV characteristic of a diode.
What are IV characteristics of diode?
DIODE IV Characteristics Forward Voltage represented to the right and Reverse Voltage to the left. The point of beginning or zero value is at the center of the graph. Forward Current lengthens above the horizontal axis with Reverse Current extending downward.