Part I: Basic Capacitor Functions
Step 1: Open Circuit File
Open the circuit file Week_1_Class_Activity_1_Cap_updated 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.
1. After pressing the space key the capacitor voltage change from 10.000u to 0.012mV
2. The capacitor still show the same voltage after pressing the space key.
3. The voltage read zero after pressing the A key.
4. After opening the A key the voltage went back to read 0.012mA
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)?
1. When voltage is applied across a close capacitor current is going to flow through the resistor, into the capacitor. That happens because the voltage across the capacitor is zero to start with, so closing the switch puts a voltage across the resistor causing current flow.
2. After the voltage source have been remove there is no current on flowing into the capacitor.
3. A Capacitor can hold a charge indefinitely when not connected to a circuit, but the circuit itself is going to drain the power out of it
4. If a conductive path is placed