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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 2.1 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	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 2.1 x 5.5 mm Connector Power Adapter AC/DC Adapter 3-Pin (IEC) 30 W 12V dc Output, 2.5 A RS Stock No. 144-0971 Subtotal (1 unit) £19.11(exc. VAT) £19.11/unit Quantity	-	AC/DC Adapter	Power Adapter	3-Pin (IEC)	-	-	2.1 x 5.5 mm Connector	30W	1800mm	-	-	1	-	2.5A	IEC C14	99mm	0°C	-	40°C	36mm	-	cULus, CCC, UL, TUV, FCC, CE	52mm	-	-	87%	-	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	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
In Stock RS PRO 2.5 mm Centre Positive Desktop AC/DC Adapter C14 60 W 12V dc Output RS Stock No. 304-023 Subtotal (1 unit) £26.26(exc. VAT) £26.26/unit Quantity	-	AC/DC Adapter	Desktop	C14	-	-	2.5 mm Centre Positive	60W	1.5m	-	-	1	-	-	C14	121.85mm	0°C	-	40°C	35mm	-	CCC, CE, KCC, PSE, SAA, UKCA, UL	50.3mm	-	-	88%	-	264V ac
In Stock RS PRO USB Type A Power Supply AC/DC Adapter UK 10 W 5V dc Output RS Stock No. 303-990 Subtotal (1 unit) £8.41(exc. VAT) £8.41/unit Quantity	-	AC/DC Adapter	Power Supply	UK	-	-	USB Type A	10W	-	-	-	1	-	-	UK Plug	59mm	0°C	-	40°C	26mm	-	CE/UKCA Declarations	49mm	-	-	78.7%	-	264V ac
In Stock RS PRO 2.1 x 5.5 mm DC Plug Power Supply AC/DC Adapter UK 12 W 12V dc Output, 0.2 A RS Stock No. 625-747 Subtotal (1 unit) £10.47(exc. VAT) £10.47/unit Quantity	-	AC/DC Adapter	Power Supply	UK	-	-	2.1 x 5.5 mm DC Plug	12W	1.5m	-	-	1	-	0.2A	UK	62mm	-20°C	Regulated	70°C	38mm	-	CCC, CE, FCC, RCM, RoHS, TUV-GS, UKCA, cULus	48mm	-	-	80%	-	264V
In Stock RS PRO AC-DC Converter Power Supplies AC/DC Adapter UK 30 W 24V dc Output, 1.25 A RS Stock No. 200-8941 Subtotal (1 unit) £16.23(exc. VAT) £16.23/unit Quantity	-	AC/DC Adapter	AC-DC Converter Power Supplies	UK	-	-	-	30W	-	-	-	1	-	1.25A	-	94mm	0°C	Regulated	45°C	-	-	UL, TUV, FCC, cULus, CE, CCC	6mm	-	-	85%	-	240V 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 36V dc Output, 1.66 A RS Stock No. 204-7567 Subtotal (1 unit) £28.27(exc. VAT) £28.27/unit Quantity	-	AC/DC Adapter	Power Adapter	IEC 320 C14	-	-	2.1 x 5.5 x 11 mm Centre Positive	72W	-	-	-	1	-	1.66A	IEC 320-C14	120mm	0°C	-	40°C	36mm	-	FCC, UL, TUV, cULus, CE, CCC	52.5mm	-	-	88%	-	240V ac
In Stock RS PRO 2.1 x 5.5 x 11 mm Centre Positive Switched Mode Power Supply AC/DC Adapter C14 60 W 12V dc Output, 5 A RS Stock No. 188-769 Subtotal (1 unit) £36.14(exc. VAT) £36.14/unit Quantity	-	AC/DC Adapter	Switched Mode Power Supply	C14	-	-	2.1 x 5.5 x 11 mm Centre Positive	60W	1000mm	-	-	1	-	5A	IEC 320-C14	116.3mm	0°C	-	40°C	31.7mm	-	CE	51mm	-	-	87%	-	240V ac
In Stock RS PRO 2.1 x 5.5 mm DC Plug AC/DC Adapter UK 7.5 W 9V Output, 0.83 A RS Stock No. 270-7390 Subtotal (1 unit) £8.69(exc. VAT) £8.69/unit Quantity	-	AC/DC Adapter	-	UK	-	-	2.1 x 5.5 mm DC Plug	7.5W	1500mm	-	-	1	-	0.83A	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 2.1 x 5.5 x 9.5 Power Adapter AC/DC Adapter 3-Pin (UK) 20 W 5V dc Output, 2.5 A RS Stock No. 255-8081 Subtotal (1 unit) £16.92(exc. VAT) £16.92/unit Quantity	-	AC/DC Adapter	Power Adapter	3-Pin (UK)	-	-	2.1 x 5.5 x 9.5	20W	1200mm	-	-	1	-	2.5A	UK Plug	76.8mm	0°C	-	40°C	54.3mm	-	IEC/EN/UL 62368-1	50mm	-	-	83.08%	-	240V ac
In Stock RS PRO 7 Output Interchangeable AC/DC Adapter AC/DC Adapter 2-Pin (EU) 24 W 12V ac, 3 V ac, 4.5 V ac, 5 V ac, 6 V ac, RS Stock No. 206-4927 Subtotal (1 unit) £17.82(exc. VAT) £17.82/unit Quantity	-	AC/DC Adapter	AC/DC Adapter	2-Pin (EU)	-	-	Interchangeable	24W	1.5m	-	-	7	-	2A	EU Plug	92.2mm	0°C	Regulated	40°C	46.2mm	-	CE, UL	35.8mm	-	-	84%	-	240V 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	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 AC-DC Converter Power Supplies AC/DC Adapter UK 30 W 15V dc Output, 2 A RS Stock No. 200-8940 Subtotal (1 unit) £16.23(exc. VAT) £16.23/unit Quantity	-	AC/DC Adapter	AC-DC Converter Power Supplies	UK	-	-	-	30W	-	-	-	1	-	2A	3-Pin Plug	210mm	0°C	Regulated	45°C	-	-	CCC, CE, cULus, FCC, TUV, UL	130mm	-	-	85%	-	240V ac
In Stock RS PRO 2.5 x 5.5 x 11 mm Centre Positive AC/DC Adapter C14 65 W 18V dc Output, 3.62 A RS Stock No. 229-7864 Subtotal (1 unit) £31.62(exc. VAT) £31.62/unit Quantity	-	AC/DC Adapter	-	C14	-	-	2.5 x 5.5 x 11 mm Centre Positive	65W	1.5m	-	-	1	-	3.62A	-	119mm	0°C	-	40°C	60mm	-	UL, CCC, CE, cULus, FCC, TUV	60mm	-	-	89%	-	240V
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	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 Positive	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 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. 904-8486 Subtotal (1 unit) £24.00(exc. VAT) £24.00/unit Quantity	-	AC/DC Adapter	Power Adapter	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 Positive	36W	1.2m	-	-	1	-	3A	C14	100mm	0°C	-	40°C	31mm	-	ULcUL, TUVSUD, GS, FCC, ENIEC609501, CE, CB	45mm	-	-	-	-	240V 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	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 2.5 x 5.5 x 11 mm Barrel Plug AC/DC Adapter AC/DC Adapter 96 W 19V dc Output, 2.5 A RS Stock No. 255-2119 Subtotal (1 unit) £37.82(exc. VAT) £37.82/unit Quantity	-	AC/DC Adapter	AC/DC Adapter	-	-	-	2.5 x 5.5 x 11 mm Barrel Plug	96W	1500mm	-	-	1	-	2.5A	IEC 320-C14	140mm	0°C	-	40°C	33mm	-	AS/NZS 62368.1. ANSI/AAMI, IEC/EN/UL62368-1	60mm	-	-	79%	-	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	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