3–104 Analysis of Competing Interface Circuits Using MATLAB Figure P3−104 displays two generalized interface circuit designs.

In both circuits, resistors R1 and R2 connect a Thévenin equivalent circuit to a load resistor. Using MATLAB, develop symbolic expressions for the load current, iL, and the input resistance, RIN, for each circuit in terms of the given parameters.

Using these two expressions, now use the MATLAB command solve to solve for R1 and R2 in terms of iL and RIN. Let vT =15V, RT = 100 Ω, RL =50 Ω, iL = 50 mA, and RIN = 100 Ω.

Can you use both types of interface circuits to find suitable values for R1 and R2 to meet these specifications? Compare your interface design(s) with the solution to Problem 3–93.

Transcribed Image Text:

VT (+1 VT RT R ww w R +1 www iL RL RIN (a) RT w R iL w R RL RIN (b) FIGURE P3-104