March 30, PSpice

The purpose of this lab is to find Nodal voltage, Thevenin Resistance and voltage, and Norton current by using PSpice. The difference between this time is that we are using schematics rather than capture student. The first picture shown is that we use PSpice to find nodal voltage the top two points. It clearly show the voltage to be 12V on the left, and 3.429V on the right. The second picture is showing how we practice sweep which is for helping us to do thevenin analysis. The third picture is the one we looking for. We drew a circuit on the schematics and put a current source in the place of Rload. We sweep the current from 0A to 1A of increasement of 0.1A. Then we run it, and it gave out the graph like picture 3. The thevenin voltage is when the current is 0A. Vth=20V, and the Rth is the slope of the graph which is 6Ohm. Then we replaced the current source with voltage source. After doing the same thing, we have In= 3.335A. The last graph is what we find for max power across Rload. We drew the thevenin circuit and sweep the resistance of load this time. Then we find graph of v*i and the maximum is 250micoW.