This is the first commercially published edition of this bestselling book by the Control Techniques company, a leading manufacturer of drives and control units to the electronics and manufacturing industries. The revised handbook has been extensively expanded and is well-written and illustrated. It is a very comprehensive guide to the technology underlying drives, motors and control units and contains a wealth of technical information for the practicing drives and electrical engineer. However, its practical approach will make it invaluable as a reference work on the shelf of every engineering department and library.