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Power Supply Cookbook, 2nd Edition
book

Power Supply Cookbook, 2nd Edition

by Marty Brown
June 2001
Intermediate to advanced content levelIntermediate to advanced
280 pages
10h 38m
English
Newnes
Content preview from Power Supply Cookbook, 2nd Edition
Designing the output rectifier/filter stage
Selection of the output rectifier
Let us select the MBR360 for D4.
Calculating the needed output filter capacitor
make C8 equal 47mF at 25VDC. I will use a very good grade tantalum capaci-
tor and place in parallel a 0.5mF ceramic capacitor.
Designing the bootstrap start-up section
I will be using the current limited linear regulator type of start-up circuit.
For R1, the base bias resistor,
For R2, the collector current limiting resistor,
Design of the controller section
I will be using a garden variety UC3842 current-mode control IC. The IC selec-
tion is important because it cannot have 50 percent duty cycle limiting. ...
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Publisher Resources

ISBN: 9780750673297