Proper Bridge Rectifier for PSU
Not what you're looking for?
FIGURE 1(a) shows a power supply using a full-wave bridge rectifier circuit. The main supply is stepped down by the transformer T1 and the secondary voltage Vs rectified by the four diodes D1 -D4; diodes D1 and D3 conduct on one half cycle and D2 and D4 on the other. The diodes are provided in a single 4-pin bridge-rectifier package which can be mounted directly onto a printed circuit board. The transformer has a turns ratio 10:1 and the average load resistance is 30. The output of the power supply is protected by a 3 A fuse which is designed to 'blow' within 5 ms if the current is in excess of ten times the rated value.
FIGURE 1(b) shows the voltage waveforms at various points in the circuit. Of interest here is the effect of switching on and off the mains supply; this has the effect of producing large transient voltages across the diodes.
Look at the attachment for the rest of the question!
Purchase this Solution
Solution Summary
The expert examines proper bridge rectifier for PSU.
Solution Preview
Solution: We first consider the worst-case peak voltage of the secondary when the switch is closed at primary peak:
Then we consider the worst-case peak voltage of the secondary when the switch is open at ...
Purchase this Solution
Free BrainMass Quizzes
Air Pollution Control - Environmental Science
Working principle of ESP
Architectural History
This quiz is intended to test the basics of History of Architecture- foundation for all architectural courses.