Ect 125 Assignments and Stuffect125_w1_ilab_1_instructions

iLab Steps

Part I: Basic Capacitor Functions

Step 1: Open Circuit File

Open the circuit file Class Activity 1 in the Week 1 folder found in Document Sharing utilizing MultiSim.

Step 2: Energize Circuit

Click the switch to turn on the circuit.

Step 3: Operation and Observation Procedure

Accomplish the following procedure to observe the operation of the circuit and to assist in the answering of questions at the end of Part I.

1. Press the space key to close the switch and observe the effect on the capacitor voltage.

2. Press the space key again to open the switch.

3. Press the A key to close the switch and observe the effect on the capacitor voltage.

4. Press the A key to open the switch.

Step 4: Answer Questions

1. When a voltage is applied across a capacitor (J2 closed), what takes place?

2. Once a voltage source has been placed across a capacitor, what happens if the voltage source is then removed (J2 opened)?

3. How long will the capacitor remain this way?

4. If a capacitor is "charged" and a conductive path is placed from the side of the capacitor to the other what happens to the charge (J1 closed)?

Part II: Series and Parallel Capacitors

Step 1: Calculation

Calculate the theoretical values of total capacitance for the following sets of capacitors in both series and parallel configurations:

a. 100 pF, 220 pF

b. 100 nF, 220 nF, 470 nF,

c. 10 uF, 1 uF, 4.7 uF

d. 100 pF, 22 nF, 4.7 uF

Step 2: Circuit Construction

Arrange the capacitors in the previous step in series and parallel configurations on the breadboard and utilize the Digital Multimeter (DMM) to measure the total capacitance in each configuration.

Step 3: Answer Questions

1. What is the major difference between series and parallel configurations in regard to total capacitance?

2. Were there any differences observed between the theoretical and measured values?

3. What is a valid explanation for any differences

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