Overview

Power Supplies Explained

A power supply is something often overlooked by radio amateurs, as for many it's simply the box that provides stable DC voltage at the flick of a switch. However, a modern power supply is much more, combining theory that dates back to the 19th century and incorporating the latest techniques in digital control, with a wealth of electronics practice in between. "Power Supplies Explained" sets out to do exactly this—explain in understandable terms what that little box is doing, right through to designing your own bespoke power supply.

Some believe there is a little magic in power supply design; beginners especially are wary of the challenging mixture of digital, analogue, magnetics, and control loops—with cooling, EMC, and safety to contend with, as well. While many books deal with the theory in depth, they often give little guidance on the practical aspects of achieving working designs. "Power Supplies Explained" is different. This 320-page paperback details how circuits are chosen for the application and how circuits are designed, including their inductors and transformers. Calculations are outlined in a simple way so that the reader can use them as a basis for their own designs.

Readers will find chapters that include descriptions of linear supplies and a wide range of switched-mode types, from simple buck converters to the latest off-line high-efficiency topologies. The worked examples are based around typical radio amateur requirements—and in many cases are versions of commercial products that the author has successfully designed. There are also chapters on magnetics theory, control loops, EMC, practical construction techniques, test equipment, and much more. High-voltage power supplies are included, with comprehensive guidance on safety. "Power Supplies Explained" sets out to dispel the mystery and encourage readers to 'have a go' with their own designs!

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