Switchmode Power Supply Handbook (McGraw-Hill Handbooks)
Publisher: McGraw-Hill Professional
Published: February 28, 1999
Language: eng
Number of pages: 450
ISBN-13: 9780070067196
First sentence: The "direct-off-line" switchmode supply is so called because it takes its power input directly from the ac power lines, without using the rather large low-frequency (60 to 50 Hz) isolation transformer normally found in linear power supplies.