At the simplification made at 7:35 where the first two roots are equated to xno, wouldn't that only be valid if the second root containing Vbi+VR was only Vbi? I thought the xno equation only had Vbi in the numerator in the root.
hello sir thanks for thes videos but i have question : how is it that we are modeling the junction as a capacitance while it is not like we are having mobile charges separated buy some dielectric ? thanks for the answer
Sir , What will be the expression for Capacitance in zero bias or no bias , Also expression of built in Voltage and Electric field inside the capacitor or space charge region???
Your videos are really helpful for me for understanding these concepts so clearly.. thanks a lot for creating these videos. Sometimes I am having some problems while solving some numericals and i am getting stuck sometime with thoes.. sir can i ask for your help with thoes
If the perturbation (voltage) becomes too large, our model will not be as accurate. You can get a sense for the amount of error incurred (and I recommend you do!) by taking the next term in the Taylor series (the one we neglected) and seeing how big it is at various voltages. Usually in the ‘biz we think of 25-50mV as being “too big” but really that depends on the application.
Thanks sir for your response , i deleted my comment while you are writing the answer to my question i think, sorry about that i deleted my comment only because i understood tha Nd part .
1:25 I think the depletion region width decreases when you appy a forward bias voltage. Therefore less "naked" electric ion charges are exposed.
At the simplification made at 7:35 where the first two roots are equated to xno, wouldn't that only be valid if the second root containing Vbi+VR was only Vbi? I thought the xno equation only had Vbi in the numerator in the root.
I am also confused by this cause I believe it should be Xn(Vr) here instead of Xno.
hello sir thanks for thes videos but i have question : how is it that we are modeling the junction as a capacitance while it is not like we are having mobile charges separated buy some dielectric ?
thanks for the answer
Sir ,
What will be the expression for Capacitance in zero bias or no bias , Also expression of built in Voltage and Electric field inside the capacitor or space charge region???
Your videos are really helpful for me for understanding these concepts so clearly.. thanks a lot for creating these videos. Sometimes I am having some problems while solving some numericals and i am getting stuck sometime with thoes.. sir can i ask for your help with thoes
What have we lost(assumed) by neglecting higher order terms in taylor series ?
If the perturbation (voltage) becomes too large, our model will not be as accurate. You can get a sense for the amount of error incurred (and I recommend you do!) by taking the next term in the Taylor series (the one we neglected) and seeing how big it is at various voltages. Usually in the ‘biz we think of 25-50mV as being “too big” but really that depends on the application.
Is 2Esi constant??
master class
the volume and the voltage represented by the same letter 'v', which is confusing...
Thanks sir for your response , i deleted my comment while you are writing the answer to my question i think, sorry about that i deleted my comment only because i understood tha Nd part .
You have way too many subscripts.
Simplify it.