ECT 122 Week 5 iLab #1
DC Power Supply
Hand Held DMM
100 Ω resistor, 120 Ω resistor, 220 Ω resistor, 330 Ω resistor
1. Identify each of these circuits.
2. Given the circuit below, calculate the values listed below.
Ra= R1+R2= 220Ω+330Ω= 550Ω
Rb=R3+R4= 120Ω+100Ω= 220Ω
Ia= Vs/Ra= 10V/550Ω= 0.01818 x 10^-3= 18.18mA
Ib= Vs/Rb= 10V/220Ω= 0.04545 x 10^-3= 45.45mA
It= Ia+Ib= 18.18mA+45.45mA= 0.06363 x 10^-3= 63.63mA
Vr1= Ia(R1)= 18.18mA(220Ω)= 3.99V
Vr2= Ia(R2)= 18.18mA(330Ω)= 5.99V
Vr3= Ib(R3)= 45.45mA(120Ω)= 5.45V
Vr4= Ib(R4)= 45.45mA(100Ω)= 4.54V
3. Download the Multisim file “Ser_Par1” from Doc Sharing, Week 5. Run the simulation and verify that the simulated results are the same as the calculated values. Were the values the same? Yes/No. If No, why not?
4. Construct the circuit above on the ELVIS protoboard. Connect the circuit’s input to the variable +12 V supply. Open the Instrument Launcher, start the Variable Power Supply, and set it to +10V. Use the handheld DMM to adjust the supply to +10 V. Using the handheld DMM, measure the values below. Remember that to measure current, the DMM must be in series with the resistor. Have the professor verify the circuit before applying power.
Were the calculated, simulated, and measured values the same? If not, why? Yes they were close. They measured a little off because my resistor values weren’t exact.
Measuring the total current.
Measuring voltage on VR1.
5. Repeat step 4 using the...
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