Bridge Rectifier and its Analysis: A Study of Output Voltage and Ripple Effects

A technical analysis of bridge rectifier functionality, output voltage, and ripple effects.

Christopher Lee
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ElectronicsIandLabBridge RectifierPre-Lab InformationRectifiers are widely used in power supplies that provide the dc voltage necessary.Materials and equipment Needed:i.Materials:oOne 120/24 V center-tapped transformeroFour diodes 1N4001oTwo 2.2 kΩresistorsoOne 100μF, 50 V electrolytic capacitor (any voltage rating is fine since is simulationonly)oOne fuse (any rating is fine since is simulation only)ii.Equipment:oOscilloscopeProcedure:1.Connect the thebridge rectifier circuit shown in Figure 1. Notice that no terminal of thetransformer secondary is at ground potential (some simulation software will not run if isnot connected to the ground, check yours). The input voltage to the bridge, VSEC, is notreferenced to ground. In some simulation software the oscilloscope cannot be used toview both the input voltage and the load voltage at the same time. Check your circuitbefore run the simulation. Compute the expected peak output voltage. Then run thesimulatoin and use a voltmeter to measure VSEC(rms). Use the oscilloscope to measurethe peak output voltage (VLOAD) without a filter capacitor. Tabulate all data gathered.Figure 1

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