Electronic Devices - Semiconductors - Discussion
Discussion Forum : Semiconductors - General Questions (Q.No. 5)
5.
As the forward current through a silicon diode increases, the internal resistance
Discussion:
28 comments Page 3 of 3.
Kumar prabhat said:
1 decade ago
Relation between R and I is inversely proportional. Diode current increases so resistance decreases.
Abdul Haleem said:
1 decade ago
In diode internal resistance (i.e Rd = 0.7 ohm) will be same for all current.
Parmar vijaykumar said:
1 decade ago
Diode has dynamic resistance that is reason increasing in I cause to decrease in R.
Mohit said:
10 years ago
Actual reason for this answer.
Semiconductors are having negative temperature coefficient so when current increases due to this temperature also increase and because of this resistance decreases.
Semiconductors are having negative temperature coefficient so when current increases due to this temperature also increase and because of this resistance decreases.
(1)
Gtej said:
8 years ago
Dynamic resistance is the same as linear resistance true or false?
Please tell me.
Please tell me.
Jay said:
8 years ago
When forward current increase then due to power dissipation some temp increase due to temp more electrons and holes created due to this majority charge carriers increase some amount so so conductivity increase so resistivity decrease resistance decrease.
Akshay said:
7 years ago
We can see in the characteristics of a diode. It's slope (1/R) increases on increasing current, thus it means that are will decrease.
Vinay said:
7 years ago
but I had a query?
That is in diode internal resistance is nothing but the internal voltage of 0.7(si) and 0.3(ge) which is constant. Then why it is solved by ohm's law?
That is in diode internal resistance is nothing but the internal voltage of 0.7(si) and 0.3(ge) which is constant. Then why it is solved by ohm's law?
Post your comments here:
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers