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What is an AC Adapter

What is an ac adapter? Check our guide to learn more about the plug that supplies power to your laptop, tablet, or other electronic device.
Created on December 18, 2022 10:12 AM
Electronics

We've asked our experts to break down and explain what an AC adapter is. It's a power supply to convert alternating current (AC) from a wall outlet into a direct current (DC). This will allow you to use your devices like laptops and smartphones. In simple words, the AC adapter meaning is a glorified transformer.

Adapters come in all shapes and sizes. You can find either two or three prongs to fit into outlets and a cord that plugs into your different appliances. The prongs on adapters for devices from other countries may look different than the ones in the United States, but they serve the same function. The AC adapter plug types are providing you with a selection of configurations and features for different purposes. 

The standard voltage in the U.S. is 110 volts, while in most of Europe it's 220 volts. 

Whether you need it for work or play, an ac adapter can quickly prove to be useful, providing electronic energy and life force whenever you need it.

 

What Does an AC Power Adapter Do?

An AC adapter is used with many electrical items in your home or workplace. 

This simple device transforms ac power into the type of power required by many electronics and appliances. Essentially, without the ac adapters, you wouldn't be able to use all your electronics properly and get the most out of them. The ac adapter controls the power supply ensuring your devices don't get too much power and become overloaded.

You need to check specific manual instructions by the manufacturer for your electronics, to make sure you're using the right adapter for your smartphone, laptop, or other devices. This will ensure you're not damaging your electronics in any way. 

AC Power Adapter Plug Types

The ac-dc power adapters come in a variety of shapes and sizes offering different types of power plugs. 

In the US most power adapters use a type N power plug, while you are more likely to find a type C power plug in Europe. 

However, these aren't the only power adapter plug types available; power supplies also come with DC power plugs, mini and micro USB-C plugs, and new developments like the USB-C Power Delivery standard. 

Whether you need a portable charger or an AC power adapter for more powerful devices, it is important to make sure your power plug is compatible before buying.

How to choose the correct ac power supply adapter?

Selecting the right ac power supply adapter can be tricky, but it doesn't have to be. 

First thing: look into ac/dc power converters, also known as dc adapters or dc power supplies. Compare a few models of ac-dc power converters to ensure you're getting the right one. 
Secondly, select the correct output voltage and wattage for your ac power supply-rated output. You will find it on the back of most ac-dc power converters. 
It's also important to check if the dc adapter matches your device's ac/dc input port before buying a new ac-dc adapter.
Lastly, double-check for any additional features like an inline fuse or AC correct power cord, if it's required by your application layout. 

Following these steps will help you get the right ac power cord supply adapter. 

Is an AC Adapter the Same as a DC Adapter?

AC adapters and DC adapters look similar, but they are quite different. 

The AC adapter is connected to a switching power supply, which converts traditional alternating current (AC) electricity into direct current (DC). 
A direct current or DC adapter is connected directly to the source of power and works with electrical devices, the ones that require a consistent flow of electrons. 

Ultimately, while an AC supply adapter can work instead of a DC adapter, this isn't always recommended due to compatibility issues. 
You have to check the electronic devices you would like to connect and according to their features and user labels to pick the correct one.

Experts first choice: 
Ac Dc Adapter for Brother P-Touch PT-D210 PTD 210 PTD220 PT-D200VP PTH110 Label Maker, UL Listed Power Supply Charger for Brother AD-24 AD-24ES AD-20 

4.7 out of 5 stars 
9,515 ratings

Ac Dc Adapter

This AC adapter is just a little plug that gives you so much for a low cost. 
It saves you money and basically pays for itself, no more burning batteries for your devices, at least for the ones that require it. 
The green light is a great useful feature to indicate it's on. 


Our expert liked the multi-protected safety system because it protects your electronic devices. The length of the cord is also very helpful. 

 

Best for traveling:
Ceptics - Type G Adapter, 2 in 1 Input US to UK Plug Adapter, Ultra-Portable Ceptics Travel Adapter, UK Power Adapter for Dual Voltage, Universal Travel Plug, Pack of 3

4.7 out of 5 stars 
4,470 ratings

Best AC Adapter for traveling 

Are you the traveling kind? if you are, don't leave home without it. 
This AC adapter is compact in size, light, made from quality materials, and works well. It was specially designed for travelers so when you take off from the US to the UK you just pack it in your handbag, suitcase, or backpack and you're good to go. 

It's also compatible in many other countries: Hong Kong, Bahrain, Belize, Botswana, Brunei, Cyprus, Dominica, England, Ghana, Gibraltar, Grenada, and Iraq.

This one can charge up to 6 devices for all 3 adapters to keep your electronics powered up safely and with a study connection. 

So wherever you take off, for business or vacation, take this adapter with you.

Best budget friendly:
TMEZON 12 Volt 2A Power Adapter Supply AC to DC 2.1mm X 5.5mm Plug 12v 2 Amp Power Supply, Wall Plug Extra Long 8 Foot Cord LED Strip Lights CCTV Security Camera Router

4.4 out of 5 stars
7,860 ratings

Best budget friendly AC Adapter 
This adapter gives you great value for your investment. It can save your electronics between 10%-15% charge per year for normal use. 
It is compatible with: computers, printers, led lights, routers, CCTV, speakers, and other devices. It has a special feature of short circuit protection which is important.   

It is small and easily integrated, charges, works flawlessly, and lets you get the most out of your electronics.

FAQs
Conclusion

As our experts explained, almost all electronic devices require an AC adapter to function because they use DC power internally.  Laptops, cellphones, tabets, and most other portable electronics use batteries as their main power source.

However, the batteries cannot generate enough voltage to power the device on their own, so they need an AC adapter to convert the voltage from the wall outlet into the correct voltage for the device. Without an AC adapter, your device will not work.

Use our expert guides and best pick and buy the one that is right for you. 

About Author
Jonathan Levi

Jonathan Levi is a writer who embraces the strange and surreal, weaving them into captivating narratives that resonate on a deeper level. His unique perspective allows him to place these extraordinary elements within a broader context.
When he's not writing, Jonathan finds solace in the world of literature. Whether it's delving into the latest news articles or immersing himself in the depths of offline books, Jonathan's thirst for knowledge and storytelling is insatiable. In Jonathan's downtime, you may catch him indulging in the thrill of a suspenseful binge-watching session. And when he's seeking a change of pace, he turns to the classic of puzzle-solving: Tetris.