EE221L Final Lab
Voltage and Current Limiter
Travis Pugh 800411659
LTSpice Simulation:
Data Table:
Resistive Network
(Ohms)
Voltage across
Resistive Network
(V)
Voltage across
LEDs
(V)
Current in circuit
(mA)
Theoretical
150
Measured
149.37
%Error
0.42%
6V
6.25V
4%
3V
2.75V
8.33%
20
23.5
17.5%
Analysis:
In the table above, the percentage of errors got increasingly worse as the different values were
measured. This is due in part to the numbers being extremely small, making any error a lot larger
than if the numbers were bigger. One of the reasons for these errors can be slightly faulty
connections within the breadboard and also resistors not being exactly 100ohms. Overall the lab
was relatively easy in showing how to combine and use resistors to obtain a needed current and
voltage for a circuit.