All Questions
4
questions
4
votes
1
answer
5k
views
Measuring barrier potential of a pn junction using a voltmeter
The image above is from the book "The Electronics companion". Can someone please explain why the barrier potential of a pn junction cannot be measured due to the presence of the contact potential?
- 253
0
votes
1
answer
3k
views
Cutoff and Conducting diodes
Why is D1 considered cutoff and D2 considered conducting ?
Note : I am working with constant voltage model where the diode voltage is 0.7v and I need to figure out I and V. Please explain why D1 is ...
- 178
45
votes
8
answers
11k
views
Why isn't there a potential difference across a disconnected diode?
I know this question sounds silly, as if there was a potential difference a current would be created when the terminals are connected together and this would mean energy has come from somewhere.
The ...
- 1,655
2
votes
1
answer
477
views
Potential drops in BJT in CE configuration?
In a simple p-n junction diode, there is a \$V_{eq}\$, the potential difference between the p-doped and the n-doped portion of the diode. When an external potential \$V\$ is applied in forward bias, ...
- 169