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Unformatted text preview: equations to find V th and R th and then use Mathematica to find their numerical values. _ + Hint: Use Solve function. You should get a very small Rth. This explains why Vo for Op Amp inverting amplifiers are insensitive to RL because the voltage divider effect is negligible. 3. Exact Solution for Diode Resistor Circuit : (1) Consider a diode and R (10kW) connected in series with a DC voltage source (Vs=5V). Use Mathematica to calculate I D and V D by solving the exact transcendental equation using the diode equation, / ( ) (e 1) D T V V D s I V I =-where I s =10-15 A, V T =0.026V. Hint: Use FindRoot function. (2) If we vary Vs from 0 to 5V use Mathematica to calculate the values for V D by solving the exact transcendental equation. Plot your calculated V D versus Vs. Also plot the corresponding Vd vs. Vs based on the hand calculation using the ON-OFF model....
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This note was uploaded on 02/06/2012 for the course EECS 70B taught by Professor Henrylee during the Spring '08 term at UC Irvine.
- Spring '08