What is forward bias?
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.
Why is the base emitter junction forward biased?
Forward bias on the emitter to base junction causes the electrons to flow from N type emitter towards the bias. Rest of the electrons cross the thin depletion region and reach the collector region.
Why is there no current in reverse bias?
In contrast if you reverse bias the junction, the potential barrier is too high and no current can flow at all across the junction in the positive direction. The electric field created by the battery causes the charge carriers to move away from the junction. With no charge carriers it becomes a very good insulator.
Why does current does not flow in reverse bias?
A diode (PN junction) in an electrical circuit allows current to flow more easily in one direction than another. The voltage with reverse biasing doesn’t cause any appreciable current to flow. When the voltage is applied in the opposite direction across the diode, the depletion region shrinks.
What condition forward biases a diode?
In a standard diode, forward biasing occurs when the voltage across a diode permits the natural flow of current, whereas reverse biasing denotes a voltage across the diode in the opposite direction. However, the voltage present across a diode during reverse biasing does not produce any significant flow of current.
When would you use a diode in a circuit?
Think of a diode as a one-way street for electricity. When the diode is in forward bias, the diode allows traffic, or current, to flow from the anode, towards the cathode leg. In a reverse bias current is blocked so there is no flow of electricity through the circuit.
What is the application of Schottky diode?
A Schottky diode is one type of electronic component, which is also known as a barrier diode. It is widely used in different applications like a mixer, in radio frequency applications, and as a rectifier in power applications. It’s a low voltage diode. The power drop is lower compared to the PN junction diodes.