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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 complete 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.

439 Products showing for AC/DC Adapters

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In Stock RS PRO 2.1 x 5.5 x 12 mm Centre Positive AC/DC Adapter AC/DC Adapter EU, Interchangeable, US 18 W 5V dc Output, 3 A RS Stock No. 903-2879 Subtotal (1 unit) TWD1,008.00(exc. GST) TWD1,008.00/unit Quantity	-	-	AC/DC Adapter	AC/DC Adapter	5V dc	EU, Interchangeable, US	-	-	-	-	2.1 x 5.5 x 12 mm Centre Positive	18W	1.5m	-	-	-	1	-	3A	Universal Plug	74mm	0°C	-	40°C	35.3mm	-	-	CE, EN 60950-1	43.5mm	-	-	79%	-	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 24V dc Output, 2.5 A RS Stock No. 188-781 Subtotal (1 unit) TWD850.00(exc. GST) TWD850.00/unit Quantity	-	-	AC/DC Adapter	Switched Mode Power Supply	24V dc	C14	-	-	-	-	2.1 x 5.5 x 11 mm Centre Positive	60W	1000mm	-	-	-	1	-	2.5A	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 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) TWD850.00(exc. GST) TWD850.00/unit Quantity	-	-	AC/DC Adapter	Switched Mode Power Supply	12V dc	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 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. 904-8483 Subtotal (1 unit) TWD966.00(exc. GST) TWD966.00/unit Quantity	-	-	AC/DC Adapter	Power Adapter	6V 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 Positive	24W	1.2m	-	-	-	1	-	4A	C14	100mm	0°C	-	40°C	31mm	-	-	ENIEC609501, CB, CE, FCC, GS, TUVSUD, ULcUL	45mm	-	-	-	-	240V ac	-
In Stock RS PRO 2.1 x 5.5 x 10 mm Centre Positive AC/DC Adapter AC/DC Adapter Type C 24 W 9V dc Output, 2.5 A RS Stock No. 124-2204 Subtotal (1 unit) TWD714.00(exc. GST) TWD714.00/unit Quantity	-	-	AC/DC Adapter	AC/DC Adapter	9V dc	Type C	-	-	-	-	2.1 x 5.5 x 10 mm Centre Positive	24W	1.5m	-	-	-	1	-	2.5A	EU Plug	69.3mm	-10°C	-	40°C	46mm	-	-	EU CoC V5, EN 61000-3-3, EN 61000-3-2, EN 55014-2, EN 55014-1, EN 55013, CE, TUV/GS EN 60950-1, UL 60065, EN 55024, EN 55022, EN 55020	41.4mm	-	-	-	-	100, 110, 115, 120, 127, 220, 230, 240V ac	-
Currently unavailable RS PRO 2.1 x 5.5 x 12 mm Centre Positive AC-DC Converter Power Supplies AC/DC Adapter US, Interchangeable, EU 18 W 15V RS Stock No. 903-2885 Subtotal (1 unit) TWD1,104.00(exc. GST) TWD1,104.00/unit Quantity	-	-	AC/DC Adapter	AC-DC Converter Power Supplies	15V dc	US, Interchangeable, EU	-	-	-	-	2.1 x 5.5 x 12 mm Centre Positive	18W	1.5m	-	-	-	1	-	1.2A	Universal Plug	74mm	0°C	-	40°C	35.3mm	-	-	CCC, VI, RCM, GS, cULus, cUL UL, CE, CB	43.5mm	-	-	79%	-	240V ac	-
In Stock RS PRO Centre, 2.1 x 5.5 x 12 mm AC/DC Adapter EU, UK 22.5 W 9V dc Output, 2.5 A RS Stock No. 360-643 Subtotal (1 unit) TWD672.00(exc. GST) TWD672.00/unit Quantity	-	-	AC/DC Adapter	-	9V dc	EU, UK	-	-	-	-	Centre, 2.1 x 5.5 x 12 mm	22.5W	1.5m	-	-	-	1	-	2.5A	Selectable	71.2mm	0°C	Regulated	40°C	31mm	-	-	UKCA, UK, RCM, CE	43.2mm	-	-	81%	-	240V ac	-
In Stock RS PRO USB A Socket AC/DC Adapter EU 5 W 5V dc Output, 1 A RS Stock No. 360-639 Subtotal (1 unit) TWD256.00(exc. GST) TWD256.00/unit Quantity	-	-	AC/DC Adapter	-	5V dc	EU	-	-	-	-	USB A Socket	5W	-	-	-	-	1	-	1A	EU Plug	41mm	0°C	Regulated	40°C	21mm	-	-	CE	33mm	-	-	74%	-	240V ac	-
In Stock RS PRO 2.1 x 5.5 x 12 mm Centre Positive AC/DC Adapter AC/DC Adapter EU, Interchangeable, US 40 W 24V dc Output, 1.7 A RS Stock No. 903-2911 Subtotal (1 unit) TWD1,193.00(exc. GST) TWD1,193.00/unit Quantity	-	-	AC/DC Adapter	AC/DC Adapter	24V dc	EU, Interchangeable, US	-	-	-	-	2.1 x 5.5 x 12 mm Centre Positive	40W	1.5m	-	-	-	1	-	1.7A	Universal Plug	90mm	0°C	-	40°C	59.4mm	-	-	CE, EN 60950-1	38mm	-	-	88.3%	-	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. 904-8509 Subtotal (1 unit) TWD866.00(exc. GST) TWD866.00/unit Quantity	-	-	AC/DC Adapter	Power Adapter	24V 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 Positive	36W	1.2m	-	-	-	1	-	1.5A	C14	100mm	0°C	-	40°C	31mm	-	-	TUVSUD, GS, FCC, CE, CB, ENIEC609501, ULcUL	45mm	-	-	-	-	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. 904-8480 Subtotal (1 unit) TWD1,015.00(exc. GST) TWD1,015.00/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 Positive	72W	1.2m	-	-	-	1	-	6A	C14	113mm	0°C	-	40°C	35mm	-	-	ULcUL, TUVSUD, GS, FCC, ENIEC609501, CE, CB	49mm	-	-	88%	-	240V ac	-
Currently unavailable RS PRO 2.1 x 5.5 x 12 mm Centre Positive AC-DC Converter Power Supplies AC/DC Adapter EU, UK, US 6 W 5V dc Output, 1.2 A RS Stock No. 903-2851 Subtotal (1 unit) TWD709.00(exc. GST) TWD709.00/unit Quantity	-	-	AC/DC Adapter	AC-DC Converter Power Supplies	5V dc	EU, UK, US	-	-	-	-	2.1 x 5.5 x 12 mm Centre Positive	6W	1.5m	-	-	-	1	-	1.2A	Universal Plug	64mm	0°C	-	40°C	30mm	-	-	VI, CB, CCC, CE, cUL UL, cULus, GS, RCM	40.5mm	-	-	79%	-	240V ac	-
In Stock RS PRO 2.1 x 5.5 x 12 mm, Centre AC/DC Adapter EU, UK 24 W 15V dc Output, 0.6 A RS Stock No. 360-645 Subtotal (1 unit) TWD672.00(exc. GST) TWD672.00/unit Quantity	-	-	AC/DC Adapter	-	15V dc	EU, UK	-	-	-	-	2.1 x 5.5 x 12 mm, Centre	24W	1.5m	-	-	-	1	-	0.6A	Selectable	71.2mm	0°C	Regulated	40°C	31mm	-	-	UK, UKCA, CE, RCM	43.2mm	-	-	86%	-	240V ac	-
In Stock RS PRO USB A Socket AC/DC Adapter UK 5 W 5V dc Output, 0.3 A RS Stock No. 360-638 Subtotal (1 unit) TWD300.00(exc. GST) TWD300.00/unit Quantity	-	-	AC/DC Adapter	-	5V dc	UK	-	-	-	-	USB A Socket	5W	-	-	-	-	1	-	0.3A	UK Plug	48.88mm	0°C	Regulated	40°C	26mm	-	-	CE, UKCA	36mm	-	-	74%	-	240V ac	-
In Stock RS PRO Centre, 2.1 x 5.5 x 12 mm AC/DC Adapter Australia, EU, UK, US 15 W 5V dc Output, 3 A RS Stock No. 360-640 Subtotal (1 unit) TWD672.00(exc. GST) TWD672.00/unit Quantity	-	-	AC/DC Adapter	-	5V dc	Australia, EU, UK, US	-	-	-	-	Centre, 2.1 x 5.5 x 12 mm	15W	1.5m	-	-	-	1	-	3A	Selectable	71.2mm	0°C	Regulated	40°C	31mm	-	-	CE, RCM, UK, UKCA	43.2mm	-	-	81%	-	240V ac	-
In Stock RS PRO Type C USB AC/DC Adapter Australia, EU, UK, US 15 W 5V dc Output, 0.6 A RS Stock No. 360-641 Subtotal (1 unit) TWD639.00(exc. GST) TWD639.00/unit Quantity	-	-	AC/DC Adapter	-	5V dc	Australia, EU, UK, US	-	-	-	-	Type C USB	15W	1.5m	-	-	-	1	-	0.6A	Selectable	71.2mm	0°C	Regulated	40°C	31mm	-	-	UK, RCM, CE, UKCA	43.2mm	-	-	81%	-	240V ac	-
In Stock RS PRO Centre, 2.1 x 5.5 x 12 mm AC/DC Adapter EU, UK 24 W 24V dc Output, 1 A RS Stock No. 360-647 Subtotal (1 unit) TWD672.00(exc. GST) TWD672.00/unit Quantity	-	-	AC/DC Adapter	-	24V dc	EU, UK	-	-	-	-	Centre, 2.1 x 5.5 x 12 mm	24W	1.5m	-	-	-	1	-	1A	Selectable	71.2mm	0°C	Regulated	40°C	31mm	-	-	UKCA, UK, RCM, CE	43.2mm	-	-	86%	-	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. 904-8474 Subtotal (1 unit) TWD864.00(exc. GST) TWD864.00/unit Quantity	-	-	AC/DC Adapter	Power Adapter	5V 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 Positive	24W	1.2m	-	-	-	1	-	4A	C14	100mm	0°C	-	40°C	31mm	-	-	CB, ULcUL, CE, TUVSUD, GS, ENIEC609501, FCC	45mm	-	-	-	-	240V ac	-
Temporarily out of stock RS PRO DC Socket AC/DC Adapter C14 250 W 24V dc Output, 10.41 A RS Stock No. 904-8519 Subtotal (1 unit) TWD3,510.00(exc. GST) TWD3,510.00/unit Quantity	-	-	AC/DC Adapter	-	24V dc	C14	-	-	-	-	DC Socket	250W	182mm	-	-	-	1	-	10.41A	C14	182mm	0°C	-	40°C	46mm	-	-	UL 62368-1, EN 62368-1, EN 55032	84.5mm	-	-	-	-	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. 904-8486 Subtotal (1 unit) TWD866.00(exc. GST) TWD866.00/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 Positive	36W	1.2m	-	-	-	1	-	3A	C14	100mm	0°C	-	40°C	31mm	-	-	ULcUL, TUVSUD, GS, FCC, ENIEC609501, CE, CB	45mm	-	-	-	-	240V ac	-