What is forward bias
Forward bias is a condition in a semiconductor diode when the p-n junction is biased with a voltage in the forward direction or positive polarity. This means that the positive terminal of the voltage source is connected to the p-side (the anode) of the diode, and the negative terminal is connected to the n-side (the cathode).
In this biasing condition, the electric field at the p-n junction is reduced, allowing the majority carriers (electrons in the n-side and holes in the p-side) to cross the junction and combine. This results in the flow of electric current through the diode.
When a diode is forward biased, the voltage applied causes a forward current to flow. The amount of current that flows through the diode is determined by the voltage applied and the characteristics of the diode itself.
Overall, forward biasing is the process of applying a voltage in the forward direction to a diode to enable the flow of current through it.