Thevenin Equivalents

Analysis Problem: Given a minimum acceptable voltage across Load #2, determine the smallest equivalent Load #2 resistance that can be successfully used and what power is consumed.We also want to know what voltage will exist at the terminals of Load #2 if we remove it and what short-circuit current will flow.

By nodal analysis we established open-circuit voltage.

By nodal analysis we calculated Vy. In is our short circuit current and Rth is the Thevinin resistance.

Extra Credit

Introduction to D.C. Circuits

Our problem is to determine:
     1) The max. permissible cable resistance required for the load to still function normally
     2) The max distance the battery and load can be separated if we use AWG #30 cable
     3) The distribution efficiency
     4) The approximate time before the battery discharges

Step 4: Component Measurements

Step 5: Build Circuit

Step 6 & 8a: Calculations

Step 8b & c: Calculations

Step 8d: Calculations

Step 8e: Extra Credit

Step 8f: Extra Credit