# Task 1: Benchtop Power Supply and Multimeter Operation - To measure voltage, connect power supply to breadboard, then wires to each row, and connect DMM to ends of each wire using grabber cables - For voltage with a resistor, put the resistor in between the two terminals of the power supply, then connect grabber cables of DMM to each end of the resistor. Do the same to find the current within a resistor # Task 2. Voltage Divider Analysis ![[Pasted image 20260216133009.png|right|308]] - First construct the circuit to the right, with the resistance of the potentiometer *not* connected to the DMM set to the given resistance $R2$ - To find $V_{in}$ required for given $VO2$, use voltage divider equation $V_{in}=V_{out} \frac{R_{pot}}{R_{2}}$ # Task 3. Equivalent Circuit Construction - Set up the circuit in LTSpice as the provided schematic shows - For $V_{Th}$, open circuit $R_{load}$ and set the operating point at the lowest point in the circuit - For $I_{N}$, short circuit $R_{load}$ and using the same operating point as before, simulate and use $I_{R3}$ as $I_{N}$ - For $V_{RLoad}$ and $I_{RLoad}$, place $R_{Load}$ back into the circuit and simulate using the same operating point. The values at $R_{load}$ and `V(n003)` give the requested quantities![[Pasted image 20260216142049.png|right|333]] - To find equivalent resistance, short circuit voltage source & treat $R_{load}$ as power source. Use formula $R_{th}=R_{3}+(R_{1}\parallel R_{2})$ - For the last step, construct the circuit like the image to the right with bottom resistor equal to $R_{eq}$ and $R_{load}$ equal to given load resistance. Let the voltage source equal the calculated $V_{Th}$