Contents
Can current flow from emitter to base?
There will always be some leakage current, even with the base tied to the emitter. However, that is “small” in practical applications to the point it is generally ignored. If you apply enough voltage to anything, current will eventually flow.
What is the relation between emitter current and base current?
Generally, the current that flows from the emitter to the collector or vice versa is the base current times the DC current gain (hFE). Note, however, that hFE varies with the collector-emitter voltage (VCE).
What is the reason why it is possible to force current to flow between the emitter & collector whenever the base emitter junction is forward biased?
When The Base Emitter P-N Junction is forward Biased it ceases to act like a diode and is just a conductor and since the N-Doped Collector region is filled with electrons and the Baser-Emitter Depletion region no longer exists the Current Flows From Collector to Emitter.
Can current flow both ways through a transistor?
Yes current can flow in both directions. An NPN transistor backwards is also an NPN.
How does current flow in PNP transistor?
When a small current flow through the base of the PNP transistor, it turns on. The current in a PNP transistor flows from the emitter to the collector. The electrons in a PNP transistor are taken from the base terminal. The current that enters the base is amplified before it reaches the collector ends.
What is base transistor?
Base – The middle section of the transistor is known as the base. The base forms two circuits, the input circuit with the emitter and the output circuit with the collector. The base of the transistor is lightly doped and very thin due to which it offers the majority charge carrier to the base.
Why does current flow in reverse bias?
Reverse bias usually refers to how a diode is used in a circuit. If a diode is reverse biased, the voltage at the cathode is higher than that at the anode. Therefore, no current will flow until the electric field is so high that the diode breaks down.
Does a Mosfet conduct in both directions?
MOSFETs will conduct equally in both directions when they are turned “on.” An interesting consequence of the body-source connection is that, even if you turn the transistor “off,” it will still conduct in the reverse direction.