Non-Ideal Power Source
This lab is focus on solving the internal resistance from the power, so we need to reduce the circuit resistance to the point where we can measured the internal resistance
Pre-Lab
In the pre-lab we first calculate the ideal voltage source which means not include the internal resistance, and calculate the non-ideal voltage with internal resistance Rs.
Next the lab begin
we first measured and record the resistor of circuit. You can see we measured a close circuit resistor by simply connect power supply and ground to the voltmeter.
Next step
I made a circuit above and internal resistance is the wave-form generator inner resistance.
Then I come out with this
For the closed circuit Vout we got 0.972 V and we supply the open circuit 0.99 V gave me Voltage out with 1.001 V with 22.3 resistor connect to the power source. To be able to measured the resistance in source we used equation Rs = (R-Vout*R)/Vout (P.S The Vout we used here is closed circuit)
Maximum Power Transfer
This lab main point is to transfer the max power to a 2.2 resistor
Pre-Lab
The formula is easy with Rload given as 2.2k the Pmax = (Vth)^2 / 4*(Rload)
Procedure
we first set up the circuit as the one drew on Pre-Lab
We measured the resistor as 2.18k and Vth = 2.48 so plug into the formula from pre-lab the max power is 2.82mW
Then we compared to the pre-lab the percent error is low as 0.70%
No comments:
Post a Comment