Eperiment Experiment #7 Full wave bridge rectifier PDF

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Experiment Number SixCENTER-TAPPED FULL-WAVE RECTIFIEROBJECTIVES : To be able to construct a full-wave center-tapped rectifier circuit. To observe and measure its input and output waveforms. To examine the effects of an open-circuited diode. MATERIALS :1 - Resistor, 10K Ω 2 - Rectifier Diode, 1N 1 -...

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Experiment Number Six CENTER-TAPPED FULL-WAVE RECTIFIER

OBJECTIVES : 1. 2. 3.

To be able to construct a full-wave center-tapped rectifier circuit. To observe and measure its input and output waveforms. To examine the effects of an open-circuited diode.

MATERIALS : 1 2 1 1 1 1

- Resistor, 10K Ω - Rectifier Diode, 1N4001 - Breadboard - VOM - Step-down Transformer (Center-Tapped) - Dual-Trace Oscilloscope

PROCEDURES : 1. 2. 3. 4. 5. 6.

7. 8. 9.

Construct circuit number 1 as shown. Observe the circuit input waveform using the oscilloscope. Draw the waveform in Graph 1, showing at least two complete cycles of the signal. Measure and record in Table 1 the peak-to-peak value and the frequency of the input signal. Also, use the VOM to measure the input (AC) voltage. Observe the circuit output waveform. Draw the waveform in Graph 2. Measure and record the peak voltage value and the frequency of the output signal. Again, use the VOM to measure the output (DC) voltage. Remove D2 from the circuit and observe the effect on the output waveform. Draw the output waveform in Graph 3. Measure and record in Table 1 the peak value and the frequency of the output signal. Measure the output voltage using the VOM. Construct circuit number 2 as shown. Observe the circuit output waveform. Draw the waveform in Graph 4. Measure and record the peak value and the frequency of the output voltage. Use the VOM to measure the output (DC) voltage.

CIRCUIT DIAGRAM :

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D

1

D 1

12

12 1N4001

1N4001 0

RL

12

10KΩ

D2

0

RL

10KΩ

12

1N4001 Circuit Number One

Circuit Number Two

DATA AND RESULTS :

Procedures

VPeak

Volts (VOM)

Frequency

Steps 2 and 3

156V

219V

59.03Hz

Steps 4 and 5

6.25V

11.4V

118.06 Hz

Step 6

16.86V

11.9V

59.03Hz

Steps 8 and 9

25.41V

16.2V

59.03Hz

Table 1

QUESTIONS : 1.

2.

What was the effect of removing the diode in the circuit (Step 6) ?  The effect of removing the diode in the circuits with regards with the step 6 is that it produces an output of half number of pulses which is why it is called half-wave rectifier. Compare the VOM measured values in Step 6 and 9. Explain why the measured output voltage in Step 9 was greater than that in Step 6. Both were half-wave rectifier circuits ?  The measured output voltage in step 9 was greater than in step 6 because we remove the diode in the first circuit. The out put voltage is different because in step 6 the two diodes are parallel while in step 9 it is in series.

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Graph 1

Graph 3

Graph 2

Graph 4

OBSERVATIONS : We observed that in experiment 6 “center-tapped full-wave rectifier”, it only used 2 diodes and a transformer from other rectifiers. The diodes are connected in opposites end. The ground is also connected in the transformer and we we’re able to construct a center-tapped fullwave rectifier circuit and learned to observe and measure input and output waveforms.

CONCLUSION : I therefore conclude that the experiment 6 center-tapped full-wave rectifier, after being able to learn how to construct the center tapped circuit and measured its input and output waveforms it shows that the current flow in both negative and positive half-cycles are the same. When compared to half-wave rectifier both of them are used to produce a corresponding output.

This study source was downloaded by 100000793034595 from CourseHero.com on 04-24-2022 09:46:12 GMT -05:00...