Recent content by Dembie

Thank you, sir

Homework Statement Homework Equations How current flows through n channel mosfet since bassicaly by applying positive voltage to the drain and negative to the substrate we actualy make the depletion layer grow widher. I mean when there is positive voltage at the gate it attracts electrons and...

Hey, can anybody help me, I am trying to figure that out from weeks. Since on the N side of the junction donor ions are building (positive charge is building) why can't that field just attract the electrons from the acceptor ions( the same electrons that gaved the atoms from the P region their...

When electron from N region fall into one of the holes in P region, the atop that accepyed that electron now has one external electron which give him negative charge(that atom becomes ionized and becouse it accepts one electron it is called acceptor ion. And the atom that gaved that eectron now...

Homework Statement When pn junction is reverse biased, the depletion layer grows and no current flows except for the little reverse current. Homework Equations But acceptor aions have one electron that they can spare if you give it a little energy, and that electron could be attracted from...

I get it now, thank you for ur answers:-)

Ty mate, but that doesn't answer the question why since on one side a large +charge from the donor ions is building , why it just not pull some of the electrons from the acceptor ions into the N region

The current depends of the resistance. The current is also measured in the amount of charges crossing a point in unit of time. I=Q/t as u can see current depends on the speed and what resistor does is that he slows the flow of electrons. In series the battery will give as much current as the...

Homework Statement Homework Equations [/B] When a diode is reverse biased positive donor ions are left in the N semiconductor and negative acceptor ions in the P type. And since the N is conected to + and its donnor ions has a large +charge, why no electrons from P cannot cross the junction and...