- #1
ovais
- 270
- 5
Hello all
Textbooks teaches us that in the formation of Pn junction in between P and N type semiconductor a region is formed where free electrons of N diffused in P side and exhaust by the holes of P near the junction. Such a region becomes devoit of free charge careers and their are only ions in these region viz negative ions in P side positive ions in N side of junction. This forms the depletion region. And due to negative ions on P side and positive ions on N side a fictious battery is formed with negative terminal on P side and positive terminal on N side. And this the inbuilt voltage and will remain so no matter we use diode in forward biasing or in reverse biasing.
This direction of polarity is in compliance with theoretical details we deal but while dealing with circuit problems texts are giving solutions by considering P side to be positive and N side negative.
I am attaching the pictures attempting to use kirchhoffs law in diode problems assuming P as positive.
Any help will be highly appreciated.
Thanks a bunch :-)
Textbooks teaches us that in the formation of Pn junction in between P and N type semiconductor a region is formed where free electrons of N diffused in P side and exhaust by the holes of P near the junction. Such a region becomes devoit of free charge careers and their are only ions in these region viz negative ions in P side positive ions in N side of junction. This forms the depletion region. And due to negative ions on P side and positive ions on N side a fictious battery is formed with negative terminal on P side and positive terminal on N side. And this the inbuilt voltage and will remain so no matter we use diode in forward biasing or in reverse biasing.
This direction of polarity is in compliance with theoretical details we deal but while dealing with circuit problems texts are giving solutions by considering P side to be positive and N side negative.
I am attaching the pictures attempting to use kirchhoffs law in diode problems assuming P as positive.
Any help will be highly appreciated.
Thanks a bunch :-)