Lab5 - ECE 322L: Microelectronics Lab Lab #5: DC Power...

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ECE 322L: Microelectronics Lab Lab #5: DC Power Supply Objectives: Learn how a DC power supply works. Materials: Wall transformer with 24V output Oscilloscope Voltmeter Solderless breadboard Hookup wire One 10k resistor One 470 resistor One 1N4004 diode One 10μF capacitor One 1N5235 Zener diode Setup: Construct the unregulated DC power supply circuit below with v ac (t) approximately 12.6 V rms . Note that v ac is the secondary of the transformer. Use the black boxes marked "AC POWER SUPPLY". Measure the AC voltage between the green and the red output connectors to make sure the fuse is not blown. Background: The figure below illustrates a block diagram of a DC power supply. Such a supply is important since most of the active devices used in electronic circuits require a source of DC power. Although this could be supplied by batteries, it is often more convenient to obtain power from the AC line (60 Hz, 115 Vrms, house current). The conversion of AC to the required DC is done by a power supply. The AC voltage is first
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This note was uploaded on 10/11/2011 for the course ECE 322 taught by Professor Staff during the Spring '08 term at Boise State.

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Lab5 - ECE 322L: Microelectronics Lab Lab #5: DC Power...

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