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1. • • What is a wall wart? It is an electrical outlet mounted transformer-isolated low voltage power supply adapter with power cord and barrel connector (now also USB connector). Virtually all types low power AC operated electronic equipment use them in lieu of batteries.
     www.electroschematics.com/of-wall-warts-wall-transformers/

     Of Wall Warts & Wall Transformers - ElectroSchematics.com

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   What is a wall wart power adapter?

   • In 2002 most external plug-in "wall wart" power adapters commonly used for low-power consumer electronics devices were of linear design, as well as supplies built into some equipment. [citation needed] External supplies are usually left plugged in even when not in use, and consume from a few watts to 35 watts of power in that state.

   AC adapter - Wikipedia

   en.wikipedia.org/wiki/AC_adapter

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   What is a wall-wart AC adapter?

   • A "wall-wart" type AC adapter for a household game console. The output has a barrel connector. "Power brick" in-line configuration, with detachable AC cord and NEMA 1-15 plug.

   AC adapter - Wikipedia

   en.wikipedia.org/wiki/AC_adapter

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   Where can I find a good tutorial on wall wart power supplies?

   • If you work with electronics at any skill level you need juice. [Jon] has a great, and clearly worded tutorial about Wall Wart Power Supplies with pretty much everything you need to know about those little black boxes hanging off of your outlets.

   Everything You Need To Know About Wall Warts | Hackaday

   hackaday.com/2011/04/06/everything-you-need-to-know-about-wall-warts/

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   What is an AC adapter?

   • An AC adapter or AC/DC adapter (also called a wall charger, power adapter, power brick, or wall wart) is a type of external power supply, often enclosed in a case similar to an AC plug. AC adapters deliver electric power to devices that lack internal components to draw voltage and power from mains power themselves.

   AC adapter - Wikipedia

   en.wikipedia.org/wiki/AC_adapter

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   How do AC adapters work?

   • AC adapters deliver electric power to devices that lack internal components to draw voltage and power from mains power themselves. The internal circuitry of an external power supply is often very similar to the design that would be used for a built-in or internal supply.

   AC adapter - Wikipedia

   en.wikipedia.org/wiki/AC_adapter

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   Are wall adapters regulated?

   • Wall adapters sold today are nearly all regulated switched-mode units, the oldschool units based round line-frequency transformers have virtually disappeared (at least in the UK).

   Is it normal for DC wall adapter power supplies to provide voltages

   electronics.stackexchange.com/questions/5759/is-it-normal-for-dc-wall-adapter-power-supplies-to-provide-voltages-above-the-no

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3. www.howtogeek.com › 93346 › undertanding-wall-wartUnderstanding Wall Wart Power Supplies [Electronics]

   www.howtogeek.com › 93346 › undertanding-wall-wart

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   Apr 12, 2011 · Wall Warts, You likely use them everyday without giving them much of a second thought. What exactly goes on inside those chunky black wall chargers that turns AC current into a nice DC trickle for your favorite electronics? Read on to learn more.

   • Author: Jason Fitzpatrick

   • Occupation: Editor-In-Chief

4. en.wikipedia.org › wiki › AC_adapterAC adapter - Wikipedia

   en.wikipedia.org › wiki › AC_adapter

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   An AC adapter or AC/DC adapter (also called a wall charger, power adapter, power brick, or wall wart) [1] is a type of external power supply, often enclosed in a case similar to an AC plug. [2] AC adapters deliver electric power to devices that lack internal components to draw voltage and power from mains power themselves.

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6. hackaday.com › 2011/04/06 › everything-you-need-toEverything You Need To Know About Wall Warts - Hackaday

   hackaday.com › 2011/04/06 › everything-you-need-to

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   Apr 6, 2011 · [Jon] has a great, and clearly worded tutorial about Wall Wart Power Supplies with pretty much everything you need to know about those little black boxes hanging off of your outlets.

7. electronics.stackexchange.com › questions › 75289safety - How does power in "wall wart" power supplies work ...

   electronics.stackexchange.com › questions › 75289

   Power out of wall-warts is solely determined by the load you connect to it and not by the potential power that can be fed from the AC wiring. Say it's a battery charger and it charges 4 x 1.5V batteries at 100mA - power out of the charger = power into the batteries = 6V * 0.1A = 600mW.

8. electronics.stackexchange.com › questions › 5759Is it normal for DC wall adapter power supplies to provide ...

   electronics.stackexchange.com › questions › 5759

   Yes, this can be normal. There are two kinds of wall-warts -- regulated and unregulated (the latter are usually cheaper). You have two of the unregulated ones. These provide their rated voltage (e.g. 9v) under the load specified on their label, but the no-load voltage can be much higher as you have discovered.

9. makezine.com › article › scienceEverything You Always Wanted to Know About Wall Warts ... - Make:

   makezine.com › article › science

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   Apr 8, 2011 · It covers the very basic details of voltage and current selection, and goes on to clearly and succinctly explain what “linear,” “regulated,” and “switching” power supplies are, and, most importantly IMHO, gives a bunch of practical tips on how to identify the various species of wall warts, in the wild, and determine if they are ...

10. ux.stackexchange.com › questions › 34864Why are AC adapters (wall warts) designed to block adjacent ...

    ux.stackexchange.com › questions › 34864

    The kind of adapter you are referring to is called a wall wart. To quote the article referenced : One of the major advantages to a wall wart has to do with preventing overheating to both the power source and the device that is receiving the power.