Diode Circuits Lab

Diode Circuits Lab - PHYS 2300 Diode Circuits Lab Half-wave...

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PHYS 2300 – Diode Circuits Lab Half-wave Rectifier Construct a half-wave rectifier circuit with a 6.3 VAC (rms) transformer and a 1N914 diode, as shown above. Connect a 2.2k load and look a the output on the scope. Is it what you expected? Polarity? Why is V peak >6.3V? Full-wave Bridge Rectifier Now construct a full-wave bridge rectifier circuit, as above. Be careful about polarities – note the band on the diode. The band indicates the cathode end of the diode. Look at the output waveform. Don’t attempt to look at the input, the signal across the transformers secondary, with the scope’s other channel at the same time. This would require connecting the second “ground” lead of the scope to one side of the secondary. What disaster would that cause? Does you output waveform make sense? Why is the peak amplitude less than in the last circuit? How much should it be? What would happen if you were to reverse any of the four diodes? ( Don’t try it!) Look at the region of the output waveform that is near zero volts. Why are these regions flat? Measure their duration and explain.
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Diode Circuits Lab - PHYS 2300 Diode Circuits Lab Half-wave...

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