AC/DC Adapters

A plug in power supply is an electrical device that takes input power from a mains power supply and converts or derives the right current, frequency and voltage to power the component it's attached to. Main power supplies provide power to devices that run on batteries or have no other power source. These are suitable for applications such as chargers, set-top boxes, motor control and other office automation products.
A plug in power supply resides outside the main unit, unlike a computer power supply which is internal.

Types of plug in power supplies
Plug in power supplies are available as switched mode, linear and universal types and including single fixed voltage, selectable voltage, AC/AC or AC/DC mains power and other variable outputs.

AC/DC Adapters (also known as AC Adaptors or AC/DC converters)
An AC adapter is made up of a central unit which draws power from an AC outlet, it then converts the power to DC that is used to charge the device. Each AC adapter has a specific power rating, measured in volts or watts that it can handle and the output of a device. Because of the power rating and the type of plug on the end, an AC adapter is not universal and can only be used with devices with the same requirements and connector.

AC stands for alternating current and comes from the wall (input), anything that plugs straight in is AC, if it requires an adapter it will convert either AC to a lower AC voltage or AC to DC.

DC stands for direct current and flows in one direction, AC flows back and forth, polarity shows which direction it moves.

International Plug Power Supplies
Some plug in power supplies come with interchangeable input connectors that you can swap when traveling to areas with different plug types such as the United Kingdom, USA, Europe, Japan and Australia. They may also come with protection features such as short circuit, over voltage and overload to suit the international safety approvals making them ideal for a the global marketplace.

Are all AC/DC Adapters the same?
It is possible to use a power adapter on different devices, but it’s important to check whether it’s AC or DC output. Using close to, if not exactly the correct voltage and Amperage. If you're unsure it might be worth investing in a universal power adapter with lots of different plug fittings.

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Description Price Input Voltage Type Output Voltage Plug Type Output Current Regulated/Unregulated Input Connector Maximum Temperature Output Connector Power Rating Number of Outputs Length Cable Length Medical Approved
RS Stock No. 615-8919
BrandRS PRO
£9.33
Each
Units
230V ac Linear Power Supply 1.5 V dc, 3 V dc, 4.5 V dc, 6 V dc, 7.5 V dc, 9 V dc, 12 V dc Type G - British 3-Pin - Regulated - +25°C 0.75 x 2.35 x 10 mm Hollow Plug, 1.35 x 3.5 x 10 mm Hollow Plug, 1.7 x 4 x 10 mm Hollow Plug, 1.75 x 4.75 x 10 mm Hollow Plug, 2.1 x 5 x 12 mm Hollow Plug, 2.5 x 12 mm Jack Plug, 2.5 x 5.5 x 12 mm Hollow Plug, 3.5 x 15 mm Jack Plug 14W 1 92mm 1.8m -
RS Stock No. 615-8880
BrandRS PRO
£7.00
Each
Units
230V ac Linear Power Supply 3 V dc, 4.5 V dc, 6 V dc, 7.5 V dc, 9 V dc, 12 V dc Type G - British 3-Pin 500mA Unregulated - +25°C 0.75 x 2.35 x 10 mm Hollow Plug, 1.35 x 3.5 x 10 mm Hollow Plug, 1.7 x 4 x 10 mm Hollow Plug, 1.75 x 4.75 x 10 mm Hollow Plug, 2.1 x 5 x 12 mm Hollow Plug, 2.5 x 12 mm Jack Plug, 2.5 x 5.5 x 12 mm Hollow Plug, 3.5 x 15 mm Jack Plug 12W 1 92mm 1.8m -
RS Stock No. 148-963
BrandRS PRO
£11.96
Each
Units
100 → 240V ac Switched Mode Power Supply 3 V dc, 4.5 V dc, 6 V dc, 7.5 V dc, 9 V dc, 12 V dc Type G - British 3-Pin - - - +25°C 2.35 x 10 mm Female Coaxial Plug, 2.5 x 12 mm Male Jack Plug, 3.5 x 10 mm Female Coaxial Plug, 3.5 x 15 mm Male Jack Plug, 4 x 10 mm Female Coaxial Plug, 4.75 x 10 mm Female Coaxial Plug, 5 x 12 mm Female Coaxial Plug, 5.5 x 12 mm Female Coaxial Plug 9.6W 1 82mm 1.8m -
RS Stock No. 731-6068
BrandRS PRO
£16.94
Each
Units
90 → 264V ac - 12V dc European Plug 3A - - +40°C 2.5 x 5.5 x 9.5 mm Centre Positive 36W 1 98mm 1.2m -
RS Stock No. 123-6687
BrandRS PRO
£5.04
Each
Units
90 → 264V ac Power Supply 5V dc 2-Pin UK 1A - 3-Pin AC Plug 40°C USB Type A 5W 1 47.3mm - -
RS Stock No. 615-8896
BrandRS PRO
£7.00
Each
Units
230V ac - 3 V dc, 4.5 V dc, 6 V dc, 7.5 V dc, 9 V dc, 12 V dc 2-Pin Type C - EuroPlug 500mA - - +25°C 0.75 x 2.35 x 10 mm Hollow Plug, 1.35 x 3.5 x 10 mm Hollow Plug, 1.7 x 4 x 10 mm Hollow Plug, 1.75 x 4.75 x 10 mm Hollow Plug, 2.1 x 5 x 12 mm Hollow Plug, 2.5 x 12 mm Jack Plug, 2.5 x 5.5 x 12 mm Hollow Plug, 3.5 x 15 mm Jack Plug 12W 1 92mm 1.8m -
RS Stock No. 148-957
BrandRS PRO
£11.96
Each
Units
100 → 240V ac Switched Mode Power Supply 3 V dc, 4.5 V dc, 6 V dc, 7.5 V dc, 9 V dc, 12 V dc European Plug - - - +25°C 2.35 x 10 mm Female Coaxial Plug, 2.5 x 12 mm Male Jack Plug, 3.5 x 10 mm Female Coaxial Plug, 3.5 x 15 mm Male Jack Plug, 4 x 10 mm Female Coaxial Plug, 4.75 x 10 mm Female Coaxial Plug, 5 x 12 mm Female Coaxial Plug, 5.5 x 12 mm Female Coaxial Plug 9.6W 1 82mm 1.8m -
RS Stock No. 731-6065
BrandRS PRO
£16.94
Each
Units
90 → 264V ac - 24V dc European Plug 1.5A - - +40°C 2.5 x 5.5 x 9.5 mm Centre Positive 36W 1 98mm 1.2m -
RS Stock No. 907-6255
BrandRS PRO
£6.80
Each
Units
90 → 264V ac USB Adapter 5V dc Australia, European Plug, UK, US 0 → 1A - - +40°C USB Type A 5W 1 60.9mm - -
RS Stock No. 726-2980
BrandRS PRO
£20.91
Each
Units
90 → 264V ac Switched Mode Power Supply 12V dc Type G - British 3-Pin 3A - - +40°C 2.1 x 5.5 x 9.5 mm Centre Positive 36W 1 64mm 1.2m -
RS Stock No. 737-8149
BrandRS PRO
£9.33
Each
Units
230V ac - 1.5 V dc, 3 V dc, 4.5 V dc, 6 V dc, 7.5 V dc, 9 V dc, 12 V dc European Plug - - - +25°C 0.75 x 2.35 x 10 mm Hollow Plug, 1.35 x 3.5 x 10 mm Hollow Plug, 1.7 x 4 x 10 mm Hollow Plug, 1.75 x 4.75 x 10 mm Hollow Plug, 2.1 x 5 x 12 mm Hollow Plug, 2.5 x 12 mm Jack Plug, 2.5 x 5.5 x 12 mm Hollow Plug, 3.5 x 15 mm Jack Plug 14W 1 92mm 1.8m -
RS Stock No. 903-2902
BrandRS PRO
£18.38
Each
Units
90 → 264V ac Power Supply 12V dc European, Interchangeable UK, US Plugtop 0 → 3A - - +40°C - 40W 1 90mm 1.5m -
RS Stock No. 731-6024
BrandRS PRO
£15.03
Each
Units
90 → 264V ac - 12V dc Australia/China, European Plug, UK, US/Japan 1.66A - - +40°C 2.5 x 5.5 x 9.5 mm Centre Positive 20W 1 98mm 1.2m -
RS Stock No. 903-2905
BrandRS PRO
£14.13
Each
Units
90 → 264V ac Power Supply 12V dc Australia, European Plug, UK, US 0 → 2A - - +40°C - 24W 1 79.1mm 1.8m -
RS Stock No. 903-2911
BrandRS PRO
£18.38
Each
Units
90 → 264V ac Power Supply 24V dc European, Interchangeable UK, US Plugtop 0 → 1.7A - - +40°C - 40W 1 90mm 1.5m -
RS Stock No. 731-6052
BrandRS PRO
£16.94
Each
Units
90 → 264V ac - 24V dc European Plug 1.25A - - +40°C 2.5 x 5.5 x 9.5 mm Centre Positive 30W 1 98mm 1.2m -
RS Stock No. 731-6002
BrandRS PRO
£15.03
Each
Units
90 → 264V ac - 5V dc Australia/China, European Plug, UK, US/Japan 4A - - +40°C 2.5 x 5.5 x 9.5 mm Centre Positive 20W 1 98mm 1.2m -
RS Stock No. 903-7017
BrandRS PRO
£12.67
Each
Units
90 → 264V ac Switched Mode Power Supply 12V dc 2-Pin UK 0 → 500mA - - +40°C 2.1 x 5.5 x 11 mm Centre Positive 6W 1 61.6mm 1.83m -
RS Stock No. 899-8592
BrandRS PRO
£8.38
Each
Units
90 → 264V ac Universal 5V dc Australia, European Plug, UK, US 2A - - +40°C USB Type A 10W 1 60.9mm - -
RS Stock No. 124-4716
BrandRS PRO
£8.96
Each
Units
90 → 264V ac Universal 12V dc Global Plug 1A - - +40°C 2.1 x 5.5 mm 12W 1 70mm 1.5m -
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