The resistance of a forward biased pn junction is zero.
In Silicon it is 25 Ohms
it only conducts in one direction
another name for diode is "pn" junction.
I cannot think of any, but a pn junction is a part of a diode and has a rectifying properties.
There are 2 type of biasing in PN junction didoe Forward biasing Reverse biasing
What is the cause of reverse recovery time in a pn junction diode
there is difference between doping levels.In normal PN junction diode we add 1 impurity for 108 atoms where as in tunnel diode we add 1 impurity for 103 atoms.there is a probability that electrons may penetrate through barrier.So will not disappear in tunnel diode we get maximum current before barrier disappear where as we get maximum current after break down(there is no barrier) this effect lies within a certain voltage limit of 0.4V. When we consider the energy band structure in case of PN junction diode the fermi level lies inside the forbidden energy gap.In case of tunnel diode,the fermi level lies outside the forbidden energy band. In tunnel diode, there is a topic about negative resistance region where as we cannot discuss it in PN junction diode. ur friend, uma.
because that the tunnel diode is a standard pn junction diode in many respect except its highly doped pn junction so it has some characteristics in the negative resistance region another that its a standard diode
diode is unipolar
another name for diode is "pn" junction.
no....is n't
zener diode
I cannot think of any, but a pn junction is a part of a diode and has a rectifying properties.
The input resistance of a trasister is jst like pn junction of a diode which has a breakdown voltage of .7v for silicon and the output resistance is like a reverse bias of a diode and hence the resistance is high
the material in which using for doping is already neutral.,,so the pn-junction diode also neutral........
We use pn junction diode in rfctification as a rectifier becase it allows current to flow in one direction only, i.e. in forward biase only , and stop current to flow in reverse baised. thats why we use pn junction diode in rectification.
semiconductor diode with out a pn junction.
There are 2 type of biasing in PN junction didoe Forward biasing Reverse biasing
The difference between the pn-junction diode and the zener diode is that the pn-junction diode is used for rectification while the zener diode is used for rectification and stabilization. Also, the zener diode can function in the breakdown region while the pn-juntion diode can not function in that regime.