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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	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 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	-
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	24V dc	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 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 2.1 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	12V dc	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 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 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 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 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	15V dc	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 Interchangeable Power Adapter AC/DC Adapter C8 65 W 18V dc, 20 V dc Output RS Stock No. 839-5785 Subtotal (1 unit) £37.10(exc. VAT) £37.10/unit Quantity	-	-	AC/DC Adapter	Power Adapter	18, 20V dc	C8	-	-	-	-	Interchangeable	65W	-	-	-	-	1	-	-	IEC 320-C8	114mm	-	-	-	32mm	-	-	CE	50mm	-	-	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	-	9V	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 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 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 AC/DC Adapter C14 65 W 19V dc Output, 3.43 A RS Stock No. 229-7865 Subtotal (1 unit) £34.95(exc. VAT) £34.95/unit Quantity	-	-	AC/DC Adapter	-	19V dc	C14	-	-	-	-	-	65W	1.5m	-	-	-	1	-	3.43A	-	119mm	0°C	-	40°C	60mm	-	-	CCC, CE, cULus, TUV, FCC, UL	36mm	-	-	89%	-	240V	-
In Stock RS PRO AC-DC Converter Power Supplies AC/DC Adapter 2-Pin (IEC) 60 W 12V dc Output, 5 A RS Stock No. 200-8934 Subtotal (1 unit) £25.74(exc. VAT) £25.74/unit Quantity	-	-	AC/DC Adapter	AC-DC Converter Power Supplies	12V dc	2-Pin (IEC)	-	-	-	-	-	60W	-	-	-	-	1	-	5A	C8	143mm	0°C	-	45°C	-	-	-	UL, TUV, FCC, cULus, CE, CCC	70mm	-	-	88%	-	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 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 2.1 x 5.5 mm AC/DC Adapter AC/DC Adapter IEC 320 C14 22.5 W 9V Output, 2.5 A RS Stock No. 270-7414 Subtotal (1 unit) £16.98(exc. VAT) £16.98/unit Quantity	-	-	AC/DC Adapter	AC/DC Adapter	9V	IEC 320 C14	-	-	-	-	2.1 x 5.5 mm	22.5W	1800mm	-	-	-	1	-	2.5A	C14	99mm	0°C	-	40°C	36mm	-	-	EN/UL 62368-1	52mm	-	-	85%	-	264V 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	-	18V dc	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	36mm	-	-	89%	-	240V	-
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 2.5 x 5.5 Power Adapter AC/DC Adapter 3-Pin (IEC) 140 W 20V dc Output, 7 A RS Stock No. 175-2799 Subtotal (1 unit) £81.15(exc. VAT) £81.15/unit Quantity	-	-	AC/DC Adapter	Power Adapter	20V dc	3-Pin (IEC)	-	-	-	-	2.5 x 5.5	140W	1.2m	-	-	-	1	-	7A	IEC C14	173mm	0°C	-	45°C	37mm	-	-	CCC, UL, FCC, TUV, cULus, CE	71mm	-	-	88%	-	240V 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	5V dc	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	-