The question asks for value of R and junction area.
I tried calculating the current flowing through the diodes using:
v2-v1 = 2.3nVt log (I2/I1)
solving for I2
Since IL = 0,
then the current flowing through the resistor should be I2 which I calculated to be 3.16mA
The voltage across is 15V - 3V = 12V
However the final resistance is 12/3.16mA = 3.79 K ohms
The answer given is 4.8K ohms.
Can someone pls help me understand what I am doing wrong?
And just a quick question, would it be right to equate saturation current Is with the junction area since they are proportional.
Thank you so much for your help
I tried calculating the current flowing through the diodes using:
v2-v1 = 2.3nVt log (I2/I1)
solving for I2
Since IL = 0,
then the current flowing through the resistor should be I2 which I calculated to be 3.16mA
The voltage across is 15V - 3V = 12V
However the final resistance is 12/3.16mA = 3.79 K ohms
The answer given is 4.8K ohms.
Can someone pls help me understand what I am doing wrong?
And just a quick question, would it be right to equate saturation current Is with the junction area since they are proportional.
Thank you so much for your help