EE_Phys_012_Lab3m - KING FAHD UNIVERSITY OF PETROLEUM AND...

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KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS University Diploma Programs PHYS 012: Solid State Physics Lab Experiment # 03 Prepared By: Mohammed Abdul Majid NAME: ___________________________________________ ID: ___________________ ================================================================== Objectives: To Build and understand the operation of an AC to DC power supply To observe and analyze the effects of capacitors, transformers, diodes and regulator in AC circuits. Summary of theory: In this lab you will be assembling and testing the design of a basic power supply, shown in the figure below. Figure 1 Page (1) of (7).
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The objective of the lab is to reacquaint you with the fundamentals of AC (alternating current) and DC (direct current) voltages as well as introduce you to the basics of AC to DC conversion through the use of diode rectifiers. In Figure 2, R L simulates the load placed on the power supply, which can be a battery operated electronic device, a computer (though it would need a DC-DC step down converter), or any other circuit that requires a DC input. Figure 2 The first section of the power supply, after the AC voltage source, is the transformer. It is responsible for converting the AC signal from a standard wall outlet down to a 12 VAC signal. Most DC power supplies maintain a voltage much less than 120 volts, so
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EE_Phys_012_Lab3m - KING FAHD UNIVERSITY OF PETROLEUM AND...

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