We are doing a full wave bridge rectifier experiment and I am asked to make a lab report. In the conclusion section we are asked to answer questions that I don't really understand. The questions are posted below.
I need help with the second through fourth bullet points. Thanks!
Homework Answers
2. Yes it is desirable to reduce the output ripple voltage, because the aim of rectifier circuit is to convert AC to DC voltage. In DC voltage ripples are not desirable.
3. The amount of ripple will be less if the value of load resistance is low.
Load resistance = desired DC voltage/ desired DC current.
RL = Vo/IL
Vo- output voltage.
4. Zener diode is operated in reverse bias to work as a voltage regulator . The minimum value of load resistance is given by
RL = Vz/IL
RL- Load resistance
Vz- Zener voltage
IL- load current.
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You may assume:
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Design a FULL WAVE BRIDGE RECTIFIER circuit that will:
Take 120volts ac, 60 hz, sinusoidal waveform and convert
it to a “regulated “dc value
giving 12 volts +, - 1 volt across a 2000-ohm output
load resistor with no more than 2%
ripple voltage.
You may assume:
a. An ideal power transformer as discussed in class.
b. For hand computations, you must assume a diode given by
Figure 4.8 page 185.
c. A filter capacitor sized per the textbook equation...
3. Consider the full-wave bridge rectifier circuit shown below. The full-wave bridge is made using silicon diodes. 120V 15V 120 V(ms) n 60 Hz 752 Vout a. Find the maximum value of VoUT, and the voltage rating for the capacitor assuming a 50% margin of safety. b. Choose the capacitance of the filter capacitor for a peak-to-peak ripple of 1V, and determine the corresponding peak diode current. What is the frequency of the ripple voltage? c. Now suppose the filter...
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