How Do You Determine Reverse Saturation Current in Diode Circuits?

[chebyshevF]

Homework Statement

Homework Equations

The Attempt at a Solution

Just want to know whether I have the right idea: so to determine the reverse saturation current (I_S), I just determine it for each value of V_D that was given? So finding I_S for 0.6, 0.65, 0.7 etc?

The question seems to be divided into two parts, one that just asks for the reverse saturation current, and then to sketch a graph for points V_D=0.6, 0.65 etc. But it's not as if we're already given an initial V_D value to determine the reverse saturation current, so I'm guessing you just find it for the various values given?

Thanks.

 

[uart]

- Replace the voltage source and resistors with a Thevenins equivalent.
- From the load line : Id = 6 - Vd (I in mA) you can find Vd.
- Sub the now known values of Vd and Id into Id = Is e^(Vd/0.0375) to find Is.

Note: Id and Is both mA in that equation. And yes it's ok to leave out the "-1".

 

[chebyshevF]

Actually I already figured it out using nodal analysis, but thanks anyway. And I just tried using Thevenin's theorem, and it worked out too :)