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Power Electronics Design
book

Power Electronics Design

by Keith H. Sueker
April 2011
Intermediate to advanced content levelIntermediate to advanced
272 pages
6h 11m
English
Newnes
Content preview from Power Electronics Design
169
Chapter 13
Switchmode Systems
Early DC generators employed an excitation system that was con-
trolled by a “tick-tock” regulator. If the generator voltage fell below
the regulated value, the excitation was switched on until it was back to
normal. Then, the excitation was switched off again, and the field cur-
rent free-wheeled through a shorting contact. The field time constant
was long enough that this simple regulator was entirely satisfactory to
maintain generator voltage within a narrow band. Until transistors
came along, such a simple system regulated the voltage for the instru-
ment cluster in an automobile, and one could occasionally see a ...
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Publisher Resources

ISBN: 9780750679275