1. The problem statement, all variables and given/known data Find the Thev Eq circuit for a DC power supply that has a 30-volt terminal voltage when delivering 400mA and a 27-volt terminal voltage when delivering 600mA. 2. Relevant equations KVL: Vs=IsR1+IsR2 Vth=Isc*Rth 3. The attempt at a solution Assuming that each 3volt step is a 200mA change, than Voc would be 36v. I determined the load resistance by checking both current EQs [6vload/.4A] and [9vload/.6A] and determined the solution of both to be 15ohms. I did a KVL utilizing the 30v and 400mA figures and determined that Rth is 75ohms. I then did a KVL with the other figures and received a 30ohm answer. Where have I strayed???