AC adapter - Wikipedia
What is AC Power Source and DC Power Supply? How to Choose a Power Supply?|Preen (AC Power Corp.)
What's the difference between AC and DC power?
Linear vs. Switching Power Supplies, tech
AC DC Power Supply: Types, Applications, Benefits, and Construction
Board Mounted AC/DC Power Converters
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Understanding AC/DC Power Supply, Article
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Part 2: How Do Switching Power Supplies Work? A Historical Overview of Revolutionary Power Supply Technologies|The World of Power Electronics|Learn about Technology with TDK
Understanding Switched-Mode Power Supplies (SMPS), The Design Engineers' Guide