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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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Stock information currently inaccessible RS PRO 72W Plug-In AC/DC Adapter 36V dc Output, 2A Output RS Stock No. 204-7567 Subtotal (1 unit) CHF.27.99(exc. VAT) CHF.27.99/unit Units		Plug-In Adapter	90 → 264V ac	-	-	36V dc	IEC 320 C14	2A	-	2.1 x 5.5 x 11 mm Centre Positive	-	-	-	IEC 320-C14	-	1	72W	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
Stock information currently inaccessible RS Better World Phihong 19.2W Power Brick AC/DC Adapter 12V dc Output, 1.6A Output RS Stock No. 204-7281 Mfr. Part No. PPL18U-120 Subtotal (1 unit) CHF.15.98(exc. VAT) CHF.15.98/unit Units	Phihong	Power Brick Adapter	100 → 240V ac	-	-	12V dc	IEC	1.6A	-	-	-	-	-	-	-	-	19.2W	-	-	-	-	-	-	-	-	-	Yes	UL Energy Verified	-	-	-	-	-
Stock information currently inaccessible RS Better World Phihong 249.6W Power Brick AC/DC Adapter 24V dc Output, 10.4A Output RS Stock No. 204-7307 Mfr. Part No. PPL250U-240L6 Subtotal (1 unit) CHF.100.88(exc. VAT) CHF.100.88/unit Units	Phihong	Power Brick Adapter	90 → 264V ac	-	-	24V dc	IEC	10.4A	-	-	-	-	-	-	-	-	249.6W	-	-	-	-	-	-	-	-	-	Yes	UL Energy Verified	-	-	-	-	-
Stock information currently inaccessible RS Better World Phihong 240W Power Brick AC/DC Adapter 12V dc Output, 20A Output RS Stock No. 204-7306 Mfr. Part No. PPL250U-120L6 Subtotal (1 unit) CHF.100.88(exc. VAT) CHF.100.88/unit Units	Phihong	Power Brick Adapter	90 → 264V ac	-	-	12V dc	IEC	20A	-	-	-	-	-	-	-	-	240W	-	-	-	-	-	-	-	-	-	Yes	UL Energy Verified	-	-	-	-	-
Stock information currently inaccessible RS PRO 15W Plug-In AC/DC Adapter 5V dc Output, 3A Output RS Stock No. 206-4924 Subtotal (1 unit) CHF.12.02(exc. VAT) CHF.12.02/unit Units		Plug-In Adapter	90 → 264V ac	-	-	5V dc	2-Pin Euro	3A	+40°C	USB Type C	-	-	1.5m	EU Plug	-	1	15W	-	-	-	-	Regulated	-	-	-	-	-	-	82.1%	40,000h	-	-	-
Stock information currently inaccessible XP Power 36W Plug-In AC/DC Adapter 24V dc Output, 1.5A Output RS Stock No. 123-4873 Mfr. Part No. VEL36US240-EU-JA Subtotal (1 unit) CHF.18.47(exc. VAT) CHF.18.47/unit Units	XP Power	Plug-In Adapter	100 V ac, 110 V ac, 115 V ac, 120 V ac, 127 V ac, 220 V ac, 230 V ac, 240V ac	-	-	24V dc	Type C	1.5A	+45°C	2.1 x 5.5 x 12 mm Centre Positive	-	-	-	EU Plug	-	1	36W	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
Stock information currently inaccessible RS Better World MEAN WELL 25W Power Brick AC/DC Adapter 12V dc Output, 0 → 2.08A Output RS Stock No. 117-6138 Mfr. Part No. GST25B12-P1J Subtotal (1 unit) CHF.15.44(exc. VAT) CHF.15.44/unit Units	MEAN WELL	Power Brick Adapter	80 → 264V ac	-	-	12V dc	-	0 → 2.08A	+70°C	DC Plug	-	-	1000mm	IEC 320-C8	-	1	25W	-	-	-	-	-	-	-	-	-	Yes	UL Energy Verified	87%	500kh	-	AS/NZS 60950.1, AU/NZ MEPS, BSMI CNS14336, CAN ICES-3(B)/NMB-3(B), CB, CCC, CCC GB4943, CE, CNS13438 class B, CoC Version 5, CSA C22.2, cUL Listed, cULus Listed, EISA 20007/DoE, EN 55022 class B EN 61000-3-2,3, EN 610	-
Stock information currently inaccessible XP Power 18W Plug-In AC/DC Adapter 15V dc Output, 1.25A Output RS Stock No. 121-7151 Mfr. Part No. VEL18US150-UK-JA Subtotal (1 unit) CHF.11.96(exc. VAT) CHF.11.96/unit Units	XP Power	Plug-In Adapter	100 V ac, 110 V ac, 115 V ac, 120 V ac, 127 V ac, 220 V ac, 230 V ac, 240V ac	-	-	15V dc	Type G	1.25A	+60°C	2.1 x 5.5 x 12 mm Centre Positive	-	-	1.5m	UK Plug	-	1	18W	-	-	-	-	-	-	-	-	-	-	-	-	250kh	-	CCC, cUL/UL 60950-1, EN 55022, EN 60950-1, EN 61000-3-2, EN 61000-3-3, EN 61000-4-2, EN 61000-4-3, EN 61000-4-4, EN 61000-4-5, EN 61000-4-6, EN 61000-4-8, IEC 60950-1, TUV	-
Stock information currently inaccessible XP Power 100W Power Brick AC/DC Adapter 19V dc Output, 5.26A Output RS Stock No. 121-7052 Mfr. Part No. AHM100PS19C2-8 Subtotal (1 unit) CHF.72.44(exc. VAT) CHF.72.44/unit Units	XP Power	Power Brick Adapter	90 → 264V ac	-	-	19V dc	-	5.26A	+60°C	-	-	-	900mm	IEC 320-C8	-	1	100W	-	-	-	-	-	-	-	-	-	-	-	-	153kh	-	ANSI/AAMI ES60601-1, CEC2008, CSA 22.2 No. 60601-1, EISA 2007, EN 55011/22, EN 60601-1, EN 60601-1-2, EN 60950, EN 61000-3-2, EN 61000-3-3, EN 61000-4-11, EN 61000-4-2, EN 61000-4-3, EN 61000-4-4, EN 61000-4-5, EN 610	Medical Approved
Stock information currently inaccessible MEAN WELL 25W Plug-In AC/DC Adapter 5V dc Output, 5A Output RS Stock No. 123-5010 Mfr. Part No. GEM40I05-P1J Subtotal (1 unit) CHF.30.17(exc. VAT) CHF.30.17/unit Units	MEAN WELL	Plug-In Adapter	100 V ac, 110 V ac, 115 V ac, 120 V ac, 127 V ac, 220 V ac, 230 V ac, 240V ac	-	-	5V dc	Australia, European Plug, UK, US	5A	+70°C	2.1 x 5.5 x 11 mm Centre Positive	-	-	1m	Universal Plug	-	1	25W	-	-	-	-	-	-	-	-	-	-	-	-	400kh	-	ANSI/AAMI ES60601-1/60601-1-11, CB, CE, cULus Recognised, EISA 2007/DOE, EN 55011 Class B, EN 61000-3-2, EN 61000-3-3, EN 61000-4-11, EN 61000-4-2, EN 61000-4-3, EN 61000-4-4, EN 61000-4-5, EN 61000-4-6, EN 61000-4-8,	Medical Approved
Stock information currently inaccessible XP Power 65W Power Brick AC/DC Adapter 19V dc Output, 3.42A Output RS Stock No. 121-7112 Mfr. Part No. VEC65US19 Subtotal (1 unit) CHF.21.94(exc. VAT) CHF.21.94/unit Units	XP Power	Power Brick Adapter	90 → 264V ac	-	-	19V dc	European Plug, UK, US	3.42A	+60°C	DC Plug	-	-	1200mm	IEC 320-C14	-	1	65W	-	-	-	-	-	-	-	-	-	-	-	90%	>200kh	-	-	-
Stock information currently inaccessible XP Power 5W Plug-In AC/DC Adapter 9V dc Output, 550mA Output RS Stock No. 121-7196 Mfr. Part No. VER05US090-JA Subtotal (1 unit) CHF.7.15(exc. VAT) CHF.7.15/unit Units	XP Power	Plug-In Adapter	100 V ac, 110 V ac, 115 V ac, 120 V ac, 127 V ac, 220 V ac, 230 V ac, 240V ac	-	-	9V dc	Interchangeable	550mA	+60°C	2.1 x 5.5 x 12 mm Centre Positive	-	-	1.5m	Universal Plug	-	1	5W	-	-	-	-	-	-	-	-	-	-	-	-	100kh	-	CCC, cUL/UL 60950-1, EN 60950-1, EN 61000-4-2, EN 61000-4-3, EN 61000-4-4, EN 61000-4-5, EN 61000-4-6, EN 61000-4-8, IEC 60950-1, TUV	-
Stock information currently inaccessible RS PRO 5W Plug-In AC/DC Adapter 5V dc Output, 1A Output RS Stock No. 123-6687 Subtotal (1 unit) CHF.9.46(exc. VAT) CHF.9.46/unit Units		Plug-In Adapter	100 V ac, 110 V ac, 115 V ac, 120 V ac, 127 V ac, 220 V ac, 230 V ac, 240V ac	-	-	5V dc	Type G	1A	+40°C	USB Type A	-	-	-	UK Plug	-	1	5W	-	-	-	-	-	-	-	-	-	-	-	-	>50000h	-	CE, EMI, EN 55022	-
Stock information currently inaccessible XP Power 60W Power Brick AC/DC Adapter 18V dc Output, 3.34A Output RS Stock No. 121-7040 Mfr. Part No. AFM60US18C2 Subtotal (1 unit) CHF.48.73(exc. VAT) CHF.48.73/unit Units	XP Power	Power Brick Adapter	90 → 264V ac	-	-	18V dc	-	3.34A	+60°C	DC Plug	-	-	950mm	IEC 320-C8	-	1	60W	-	-	-	-	-	-	-	-	-	-	-	-	>250kh	-	CCC Qualified, CEC2008, EISA2007, EN 55011/22/FCC, EN 60601-1, EN 60601-1-2, EN 60950-1, EN 61000-3-2, EN 61000-3-3, EN 61000-4-11, EN 61000-4-2, EN 61000-4-3, EN 61000-4-4, EN 61000-4-5, EN 61000-4-6, EN 61000-4-8, I	Medical Approved
Stock information currently inaccessible RS Better World Phihong 36W Power Brick AC/DC Adapter 24V dc Output, 1.5A Output RS Stock No. 204-7291 Mfr. Part No. PPL36W-240 Subtotal (1 unit) CHF.24.70(exc. VAT) CHF.24.70/unit Units	Phihong	Power Brick Adapter	80 → 264V ac	-	-	24V dc	IEC	1.5A	-	-	-	-	-	-	-	-	36W	-	-	-	-	-	-	-	-	-	Yes	UL Energy Verified	-	-	-	-	-
Stock information currently inaccessible MEAN WELL 22W Plug-In AC/DC Adapter 7.5V dc Output, 2.93A Output RS Stock No. 117-6176 Mfr. Part No. GST25E07-P1J Subtotal (1 unit) CHF.13.63(exc. VAT) CHF.13.63/unit Units	MEAN WELL	Plug-In Adapter	100 V ac, 110 V ac, 115 V ac, 120 V ac, 127 V ac, 220 V ac, 230 V ac, 240V ac	-	-	7.5V dc	Type C	2.93A	+70°C	2.1 x 5.5 x 11 mm Centre Positive	-	-	1m	EU Plug	-	1	22W	-	-	-	-	-	-	-	-	-	-	-	-	500kh	-	CB, CE, EN 55022 Class B, EN 61000-3-2,3, EN 61000-4-2,3,4,5,6,8,11, GS, MIL-HDBK-217F, TUV EN 60950-1, VI	-
Stock information currently inaccessible RS PRO 62.4W Plug-In AC/DC Adapter 48V dc Output, 1.3A Output RS Stock No. 204-7568 Subtotal (1 unit) CHF.27.99(exc. VAT) CHF.27.99/unit Units		Plug-In Adapter	90 → 264V ac	-	-	48V dc	IEC 320 C14	1.3A	-	2.1 x 5.5 x 11 mm Centre Positive	-	-	-	IEC 320-C14	-	1	62.4W	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
Stock information currently inaccessible RS Better World Phihong 65.3W Power Brick AC/DC Adapter 48V dc Output, 1.36A Output RS Stock No. 204-7297 Mfr. Part No. PPL65U-480 Subtotal (1 unit) CHF.24.70(exc. VAT) CHF.24.70/unit Units	Phihong	Power Brick Adapter	100 → 240V ac	-	-	48V dc	IEC	1.36A	-	-	-	-	-	-	-	-	65.3W	-	-	-	-	-	-	-	-	-	Yes	UL Energy Verified	-	-	-	-	-
Stock information currently inaccessible RS PRO 12W Plug-In AC/DC Adapter 5V dc Output, 2.4A Output RS Stock No. 206-4917 Subtotal (1 unit) CHF.9.52(exc. VAT) CHF.9.52/unit Units		Plug-In Adapter	90 → 264V ac	-	-	5V dc	2-Pin Euro	2.4A	+40°C	Micro USB Type B	-	-	1.5m	EU Plug	-	1	12W	-	-	-	-	Regulated	-	-	-	-	-	-	80.6%	40,000h	-	-	-
Stock information currently inaccessible TDK-Lambda 65W Power Brick AC/DC Adapter 24V dc Output, 2.7A Output RS Stock No. 106-5934 Mfr. Part No. DTM-65PW-240-C8 Subtotal (1 unit) CHF.69.63(exc. VAT) CHF.69.63/unit Units	TDK-Lambda	Power Brick Adapter	85 → 264V ac	-	-	24V dc	C8	2.7A	+60°C	KPPx-4P	-	-	1050mm	IEC 320-C8	-	1	65W	-	-	-	-	-	-	-	-	-	-	-	-	-	-	60601-1, 60601-1-11, ANSI/AAMI ES60601-1, EN/IEC60601-1:EN55011B, EN60601-1-2	Medical Approved