Electrical Engineering Laboratory
Experiment: Power Supplies
Experiment Aims
- Recognize and distinguish between AC and DC power supplies and their specifications
- Properly connect the power supply to the experimental circuit
- Calibrate the power supply output using a voltmeter
Introduction
A power supply is a device that provides electrical energy to one or more electric loads. It converts one form of electrical energy to another or converts other energy types into electrical energy.
A regulated power supply controls the output voltage or current to a nearly constant value despite variations in load or input voltage.
Experiment Tools
- Different types of power supplies
- Voltmeter
- Electric wires for connection
Results
Activity 1: Power Supply Characteristics
| No. | Characteristics | Answer |
|---|---|---|
| 1 | Abbreviation and Symbol | _____ |
| 2 | Input voltage | _____ V |
| 3 | Output range | From _____ to _____ V |
Activity 2: Calibration of Power Supplies
DC Power Supply Calibration
| Power supply voltage (V) | Voltmeter Reading (V) | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| 20 | 16 | 14 | 10 | 8 | 6 | 4 | 2 | 0 | |
AC Power Supply Calibration
| Power supply voltage (V) | Voltmeter Reading (V) | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| 20 | 16 | 14 | 10 | 8 | 6 | 4 | 2 | 0 | |
Activity 3: Identify Different Power Supplies
| No. | Input Voltage (V) | Type (AC/DC) | Max Output Voltage (V) |
|---|---|---|---|
| 1 | |||
| 2 | |||
| 3 | |||
| 4 | |||
| 5 | |||
| 6 |
Conclusion
This experiment provided hands-on experience with different types of power supplies, their characteristics, and calibration procedures.
Note: Fill in the blank fields in the tables during the lab session.
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