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AC/DC Adapters

An AC/DC adapter, or 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 is 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. You can learn more in our guide to AC/DC adapters.

For popular Raspberry Pi power supplies, visit our sister site OKdo.com and all thing Raspberry Pi and SBC.

How does an AC/DC adapter work?

An AC/DC 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.

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 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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In Stock RS PRO 2.5 x 5.5 mm Centre Positive Power Supply AC/DC Adapter C14 42 W 12V dc Output, 3.5 A RS Stock No. 304-022 Subtotal (1 unit) £23.06(exc. VAT) £23.06/unit Quantity	-	-	AC/DC Adapter	Power Supply	12V dc	C14	-	-	-	2.5 x 5.5 mm Centre Positive	42W	1.5m	-	-	-	1	-	3.5A	C14	117.5mm	0°C	-	40°C	34mm	-	CCC, UL, CE, UKCA, SAA, PSE, KCC	47.5mm	-	-	88%	-	264V ac
In Stock RS PRO 2.1 x 5.5 x 11 mm Centre Positive Power Adapter AC/DC Adapter IEC 320 C14 72 W 24V dc Output, 3 A RS Stock No. 204-7566 Subtotal (1 unit) £28.27(exc. VAT) £28.27/unit Quantity	-	-	AC/DC Adapter	Power Adapter	24V dc	IEC 320 C14	-	-	-	2.1 x 5.5 x 11 mm Centre Positive	72W	-	-	-	-	1	-	3A	IEC 320-C14	120mm	0°C	-	40°C	36mm	-	CCC, CE, cULus, FCC, TUV, UL	52.5mm	-	-	88%	-	240V ac
In Stock RS PRO AC/DC Adapter AC/DC Adapter 3-Pin (UK) 50.4 W 24V dc Output, 2.1 A RS Stock No. 201-2631 Subtotal (1 unit) £21.91(exc. VAT) £21.91/unit Quantity	-	-	AC/DC Adapter	AC/DC Adapter	24V dc	3-Pin (UK)	-	-	-	-	50.4W	-	-	-	-	1	-	2.1A	3-Pin Plug	-	0°C	Regulated	45°C	-	-	FCC, CCC, TUV, UL, cULus, CE	-	-	-	88%	-	240V ac
Temporarily out of stock RS PRO 2.1 x 5.5 x 12 mm Centre Positive AC/DC Adapter AC/DC Adapter Type G 12 W 12V dc Output, 1 A RS Stock No. 175-3303 Subtotal (1 unit) £8.85(exc. VAT) £8.85/unit Quantity	-	-	AC/DC Adapter	AC/DC Adapter	12V dc	Type G	-	-	-	2.1 x 5.5 x 12 mm Centre Positive	12W	1.5m	-	-	-	1	-	1A	UK Plug	70mm	0°C	Regulated	40°C	73.2mm	-	EN 60950-1, CE	49.5mm	-	-	79.3%	-	240V ac
In Stock RS PRO 2.5 x 5.5 mm Centre Positive Power Adapter AC/DC Adapter C14 120 W 24V dc Output, 5 A RS Stock No. 175-3290 Subtotal (1 unit) £86.06(exc. VAT) £86.06/unit Quantity	-	-	AC/DC Adapter	Power Adapter	24V dc	C14	-	-	-	2.5 x 5.5 mm Centre Positive	120W	-	-	-	-	1	-	5A	IEC 320-C14	168mm	0°C	-	40°C	39mm	-	EN 60950-1, CE	66mm	-	-	88%	-	240V ac
In Stock RS PRO 2.1 x 5.5 x 12 mm Centre Positive AC/AC Adapter AC/AC Adapter Type G 20 W 12V ac Output, 1.6 A RS Stock No. 139-1775 Subtotal (1 unit) £17.70(exc. VAT) £17.70/unit Quantity	-	-	AC/AC Adapter	AC/AC Adapter	12V ac	Type G	-	-	-	2.1 x 5.5 x 12 mm Centre Positive	20W	1.8m	-	-	-	1	-	1.6A	UK Plug	87.2mm	-20°C	-	40°C	57mm	-	IEC/EN 61558	56.5mm	-	-	-	-	240V ac
In Stock RS PRO 2.5 mm Centre Positive Desktop AC/DC Adapter C14 60 W 12V dc Output, 5 A RS Stock No. 304-023 Subtotal (1 unit) £26.26(exc. VAT) £26.26/unit Quantity	-	-	AC/DC Adapter	Desktop	12V dc	C14	-	-	-	2.5 mm Centre Positive	60W	1.5m	-	-	-	1	-	5A	C14	121.85mm	0°C	-	40°C	35mm	-	CCC, CE, KCC, PSE, SAA, UKCA, UL	50.3mm	-	-	88%	-	264V ac
In Stock RS PRO 2.1 x 5.5 x 11 mm Centre Positive Power Adapter AC/DC Adapter IEC 320 C14 60 W 12V dc Output, 5 A RS Stock No. 204-7563 Subtotal (1 unit) £29.69(exc. VAT) £29.69/unit Quantity	-	-	AC/DC Adapter	Power Adapter	12V dc	IEC 320 C14	-	-	-	2.1 x 5.5 x 11 mm Centre Positive	60W	-	-	-	-	1	-	5A	IEC 320-C14	120mm	0°C	-	40°C	36mm	-	FCC, TUV, UL, CCC, CE, cULus	52.5mm	-	-	88%	-	240V ac
In Stock RS PRO 4 Pin DIN Connector Switched Mode Power Supply AC/DC Adapter C14 180 W 24V dc Output, 7.5 A RS Stock No. 303-978 Subtotal (1 unit) £76.93(exc. VAT) £76.93/unit Quantity	-	-	AC/DC Adapter	Switched Mode Power Supply	24V dc	C14	-	-	-	4 Pin DIN Connector	180W	1.2m	-	-	-	1	-	7.5A	C14	145mm	0°C	-	40°C	31mm	-	CE, UKCA, UL	65mm	-	-	80%	-	264V ac
In Stock RS PRO 2.1 mm DC Power Connector Power Supply AC/DC Adapter UK 24 W 24V dc Output, 1 A RS Stock No. 304-007 Subtotal (1 unit) £14.65(exc. VAT) £14.65/unit Quantity	-	-	AC/DC Adapter	Power Supply	24V dc	UK	-	-	-	2.1 mm DC Power Connector	24W	1.5m	-	-	-	1	-	1A	UK Plug	71.2mm	0°C	-	40°C	29mm	-	UKCA, CE	43.2mm	-	-	86%	-	264V ac
In Stock RS PRO AC-DC Converter Power Supplies AC/DC Adapter UK 30 W 12V dc Output, 2.5 A RS Stock No. 200-8939 Subtotal (1 unit) £16.23(exc. VAT) £16.23/unit Quantity	-	-	AC/DC Adapter	AC-DC Converter Power Supplies	12V dc	UK	-	-	-	-	30W	-	-	-	-	1	-	2.5A	-	94mm	0°C	Regulated	45°C	-	-	CCC, CE, cULus, FCC, TUV, UL	6mm	-	-	85%	-	240V ac
In Stock RS PRO 2.1 x 5.5 mm DC Plug AC/DC Adapter UK 7.5 W 9V Output, 830 mA RS Stock No. 270-7390 Subtotal (1 unit) £8.69(exc. VAT) £8.69/unit Quantity	-	-	AC/DC Adapter	-	9V	UK	-	-	-	2.1 x 5.5 mm DC Plug	7.5W	1.5m	-	-	-	1	-	830mA	UK Plug	66.3mm	0°C	Regulated	45°C	59.2mm	-	IEC/EN 62368-1 safety approved	49.5mm	-	-	80.23%	-	264V ac
In Stock RS PRO Plug-In Desktop Adapter Socket 60 W 12V dc Output, 5 A RS Stock No. 813-719 Subtotal (1 unit) £16.93(exc. VAT) £16.93/unit Quantity	-	-	Adapter	Desktop	12V dc	Socket	-	-	-	Plug-In	60W	1.2m	-	-	-	1	-	5A	IEC C14	121mm	0°C	-	60°C	31mm	-	CE	54mm	-	-	88.07%	-	264V ac
In Stock RS PRO Jack Connector 12+0.5mm Power Supply AC/DC Power Supply UK 18 W 7.5V dc Output, 2 A RS Stock No. 625-744 Subtotal (1 unit) £9.11(exc. VAT) £9.11/unit Quantity	-	-	AC/DC Power Supply	Power Supply	7.5V dc	UK	-	-	-	Jack Connector 12+0.5mm	18W	1.5m	-	-	-	1	-	2A	UK	70mm	-20°C	Regulated	60°C	53mm	-	EMC Class B, EN IEC 62368-1, RoHS, UKCA	33mm	-	-	84%	-	264V
In Stock RS PRO 2.1 x 5.5 x 12 mm Centre Positive AC/DC Adapter AC/DC Adapter Type G 3 W 9V dc Output, 330 mA RS Stock No. 139-1778 Subtotal (1 unit) £11.51(exc. VAT) £11.51/unit Quantity	-	-	AC/DC Adapter	AC/DC Adapter	9V dc	Type G	-	-	-	2.1 x 5.5 x 12 mm Centre Positive	3W	1.8m	-	-	-	1	-	330mA	UK Plug	56mm	-20°C	Unregulated	40°C	45mm	-	IEC/EN 61558	52mm	-	-	-	-	240V ac
In Stock RS PRO 2.1 x 5.5 x 11 mm Centre Positive Power Adapter AC/DC Adapter IEC 320 C14 40 W 5V dc Output, 8 A RS Stock No. 204-7562 Subtotal (1 unit) £28.27(exc. VAT) £28.27/unit Quantity	-	-	AC/DC Adapter	Power Adapter	5V dc	IEC 320 C14	-	-	-	2.1 x 5.5 x 11 mm Centre Positive	40W	-	-	-	-	1	-	8A	IEC 320-C14	-	0°C	-	40°C	36mm	-	UL/CUL:UL/CSA62368-1, CB:IEC62368-1, TUV/GS:EN62368-1	-	-	-	86.065%	-	264V ac
In Stock RS PRO 2.1 x 5.5 x 12 mm Centre Positive AC/DC Adapter AC/DC Adapter Type G 6 W 12V dc Output, 500 mA RS Stock No. 175-3294 Subtotal (1 unit) £5.83(exc. VAT) £5.83/unit Quantity	-	-	AC/DC Adapter	AC/DC Adapter	12V dc	Type G	-	-	-	2.1 x 5.5 x 12 mm Centre Positive	6W	1.5m	-	-	-	1	-	500mA	UK Plug	67mm	0°C	Regulated	40°C	64.8mm	-	CE, EN 60950-1	49.55mm	-	-	79.3%	-	240V ac
In Stock RS PRO USB Type A Power Supply AC/DC Adapter UK 10 W 5V dc Output, 2.1 A RS Stock No. 303-990 Subtotal (1 unit) £8.41(exc. VAT) £8.41/unit Quantity	-	-	AC/DC Adapter	Power Supply	5V dc	UK	-	-	-	USB Type A	10W	-	-	-	-	1	-	2.1A	UK Plug	59mm	0°C	-	40°C	26mm	-	CE/UKCA Declarations	49mm	-	-	78.7%	-	264V ac
In Stock RS PRO 1.75 x 4.75 x 11 mm Centre Positive Female Coaxial Plug, 2.1 x 5.5 x 10.5 mm Centre Positive Female Coaxial Plug, RS Stock No. 904-8480 Subtotal (1 unit) £33.10(exc. VAT) £33.10/unit Quantity	-	-	AC/DC Adapter	Power Adapter	12V dc	C14	-	-	-	1.75 x 4.75 x 11 mm Centre Positive Female Coaxial Plug, 2.1 x 5.5 x 10.5 mm Centre Positive Female Coaxial Plug, 2.5 x 5.5 x 12.5 mm Centre Positive Female Coaxial Plug, 3 x 6.3 x 12 mm Centre Positi	72W	1.2m	-	-	-	1	-	6A	C14	113mm	0°C	-	40°C	35mm	-	ULcUL, TUVSUD, GS, FCC, ENIEC609501, CE, CB	49mm	-	-	88%	-	240V ac
In Stock RS PRO AC-DC Converter Power Supplies AC/DC Adapter UK 50.4 W 15V dc Output, 3.36 A RS Stock No. 200-8947 Subtotal (1 unit) £21.49(exc. VAT) £21.49/unit Quantity	-	-	AC/DC Adapter	AC-DC Converter Power Supplies	15V dc	UK	-	-	-	-	50.4W	-	-	-	-	1	-	3.36A	3-Pin Plug	94mm	0°C	Regulated	45°C	-	-	FCC, cULus, CE, CCC, UL, TUV	6mm	-	-	88%	-	240V ac