17th October 2019

encyclopedia
16

What is meant by forward and reverse bias?

forward bias The d.c. voltage required to maintain current flow in a bipolar transistor or diode or to enhance current flow in a field-effect transistor. For example, a silicon diode will conduct current only if its anode is at a positive voltage compared to its cathode; it is then said to be forward biased.

Furthermore, what is forward biased diode?

When voltage is applied across a diode in such a way that the diode allows current, the diode is said to be forward-biased. When voltage is applied across a diode in such a way that the diode prohibits current, the diode is said to be reverse-biased.

What is forward current of a diode?

In order to “turn on” and conduct current in the forward direction, a diode requires a certain amount of positive voltage to be applied across it. The typical voltage required to turn the diode on is called the forward voltage (VF). It might also be called either the cut-in voltage or on-voltage.

Why is a diode used?

Main functions. The most common function of a diode is to allow an electric current to pass in one direction (called the diode's forward direction), while blocking it in the opposite direction (the reverse direction).
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