USE EXCEL TO MAKE A GRAPH OF THE DATA IN YOU COLLECTED THAT MEETS THE FOLLOWING CRITERIA: But for now, you should see that if the battery is not controlling the voltage directly, adding a load to a voltage divider changes the circuit, and each connection point in the voltage divider has a different load resistance value for maximum power transfer. We will eventually learn how to calculate the load resistance that allows maximum power transfer. Is it the same load resistor for max power transfer for Vb and Vc? _ Which load value resulted in the highest power dissipated in the load resistor at Vc?_ Which load value resulted in the highest power dissipated in the load resistor at Vb? _ Which load value resulted in the highest power dissipated in the load resistor at Va?_ Which load affected the voltage divider the most (highest % difference)? _ Power delivered to load resistor using measured voltage. % difference (Difference divided by expected) You can use Excel to do the calculations to save time filling in the chart. You will only have one load resistor on the circuit at any one time, unused connection points remain unattached!!!

To load the circuit you will place one resistor between ground and either Va, Vb or Vc. Do NOT have a load resistor yet on this circuit: It does not need the extra labels that mine has, but make sure the voltage indicators are included and show that you have the correct voltages. Insert the image of your voltage divider circuit here. This will make the 3-D circuit construction easier later. But to simplify this circuit INSTEAD USE DC POWER SUPPLY FOR 12V SO YOU HAVE A BATTERY ON THE BOARD. To get the 12 V source, can go to Simulate > Instruments >NI ELVIS mx instruments > NI ElVIS Variable Power Supply just like you would see in the ELVIS Instrument panel.

This will save you time when you put the load on the circuit, to see the voltage change at the connection point when you add a load. You will want to put voltage indicators on each one connected between ground and each test point. Va, Vb, Vc are the connection points you will use to load to the circuit at 12, 10 and 6V.

Part 1: Build a Voltage Divider and Test it with Loads.Ĭonstruct a voltage divider with a 12V source and use 1000, 20 Ohms to divide the voltage into 10V and 6V at nodes in the circuit. YOU WILL LOSE POINTS FOR EVERY CIRCUIT IMAGE THAT DOES NOT HAVE THIS On every Design sheet from the top menu “Place” find “Text” and write your: Later we will see a 3-D Model of the ELVIS Board. You will get a workspace that has the connections you will find on our ELVIS board. START A NEW PROJECT BY GOING TO FILE>NEW>NI ELVIS I Design. Program Files -> National Instruments (folder) -> Circuit Design Suite -> Multisim Scored out of 10 as part of your Lab Grade.

Breadboard in multisim 14.0