A 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's 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.
Types of plug in power supplies
Plug in power supplies are available as switched mode, linear and universal types and including single fixed voltage, selectable voltage, AC/AC or AC/DC mains power and other variable outputs.
AC/DC Adapters (also known as AC Adaptors or AC/DC converters)
An AC 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.
AC stands for alternating current and comes from the wall (input), anything that plugs straight in is AC, if it requires an adapter it will convert either AC to a lower AC voltage or AC to DC.
DC stands for direct current and flows in one direction, AC flows back and forth, polarity shows which direction it moves.
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 a 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.
AC/DC Adapters
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| Description | Price | Input Voltage | Output Voltage | Output Current | Plug Type | Regulated/Unregulated | Input Connector | Output Connector | Power Rating | Type | Number of Outputs | Length | Cable Length | Ripple And Noise | Medical Approved | |
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RS Stock No.
103-4301
Mfr. Part No.T5875DV
BrandRaspberry Pi
|
£5.99
Each (In a Box of 60)
Units
|
90 → 264V ac | 5.1 V | 2.5A | - | - | Socket | Micro USB | 13W | Power Supply | 1 | 73.2mm | 1.5m | <120mV | - |
|
RS Stock No.
909-8126
Mfr. Part No.T5875DV
BrandRaspberry Pi
|
£6.50
Each
Units
|
90 → 264V ac | 5.1 V | 2.5A | - | - | Socket | Micro USB | 13W | Power Supply | 1 | 73.2mm | 1.5m | <120mV | - |
|
RS Stock No.
103-4302
Mfr. Part No.T5989DV
BrandStontronics
|
£5.99
Each (In a Box of 60)
Units
|
90 → 264V ac | 5.1 V | 2.5A | - | - | Socket | Micro USB | 13W | Universal | 1 | 73.2mm | 1.5m | <120mV | - |
|
RS Stock No.
909-8135
Mfr. Part No.T5989DV
BrandStontronics
|
£6.50
Each
Units
|
90 → 264V ac | 5.1 V | 2.5A | - | - | Socket | Micro USB | 13W | Power Supply | 1 | 73.2mm | 1.5m | <120mV | - |
|
RS Stock No.
615-8919
BrandRS PRO
|
£9.99
Each
Units
|
230V ac | 1.5 V dc, 3 V dc, 4.5 V dc, 6 V dc, 7.5 V dc, 9 V dc, 12 V dc | - | Type G - British 3-Pin | - | - | 0.75 x 2.35 x 10 mm Hollow Plug, 1.35 x 3.5 x 10 mm Hollow Plug, 1.7 x 4 x 10 mm Hollow Plug, 1.75 x 4.75 x 10 mm Hollow Plug, 2.1 x 5 x 12 mm Hollow Plug, 2.5 x 12 mm Jack Plug, 2.5 x 5.5 x 12 mm Hollow Plug, 3.5 x 15 mm Jack Plug | 14W | Linear Power Supply | 1 | 92mm | 1.8m | 1.6V | - |
|
RS Stock No.
822-6373
BrandStontronics
|
£5.99
Each
Units
|
90 → 264V ac | 5 V dc | 2A | European Plug | - | Aus Changeable Heads, Euro Plugtop, UK Plugtop | Micro USB | 10W | Power Supply | 1 | 36mm | 1.5m | 300mV Pk-Pk | - |
|
RS Stock No.
615-8880
BrandRS PRO
|
£7.48
Each
Units
|
230V ac | 3 V dc, 4.5 V dc, 6 V dc, 7.5 V dc, 9 V dc, 12 V dc | 500mA | Type G - British 3-Pin | - | - | 0.75 x 2.35 x 10 mm Hollow Plug, 1.35 x 3.5 x 10 mm Hollow Plug, 1.7 x 4 x 10 mm Hollow Plug, 1.75 x 4.75 x 10 mm Hollow Plug, 2.1 x 5 x 12 mm Hollow Plug, 2.5 x 12 mm Jack Plug, 2.5 x 5.5 x 12 mm Hollow Plug, 3.5 x 15 mm Jack Plug | 12W | Linear Power Supply | 1 | 92mm | 1.8m | 1.5V | - |
|
RS Stock No.
148-963
BrandRS PRO
|
£11.68
Each
Units
|
100 → 240V ac | 3 V dc, 4.5 V dc, 6 V dc, 7.5 V dc, 9 V dc, 12 V dc | - | Type G - British 3-Pin | - | - | 2.35 x 10 mm Female Coaxial Plug, 2.5 x 12 mm Male Jack Plug, 3.5 x 10 mm Female Coaxial Plug, 3.5 x 15 mm Male Jack Plug, 4 x 10 mm Female Coaxial Plug, 4.75 x 10 mm Female Coaxial Plug, 5 x 12 mm Female Coaxial Plug, 5.5 x 12 mm Female Coaxial Plug | 9.6W | Switched Mode Power Supply | 1 | 82mm | 1.8m | 300mV | - |
|
RS Stock No.
702-3255
Mfr. Part No.5311103
BrandAnsmann
|
£10.65
Each
Units
|
100 → 240V ac | 3 V dc, 4.5 V dc, 5 V dc, 6 V dc, 7.5 V dc, 9 V dc, 12 V dc | - | European Plug | - | - | 0.75 x 2.35 x 10 mm Female Coaxial Plug, 1.35 x 3.5 x 10 mm Female Coaxial Plug, 1.7 x 4 x 10 mm Female Coaxial Plug, 2.1 x 5 x 12 mm Female Coaxial Plug, 2.5 x 12 mm Male Jack Plug, 2.5 x 5.5 x 12 mm Female Coaxial Plug, 3.5 x 15 mm Male Jack Plug | 3.6W | Switched Mode Power Supply | 1 | 69mm | 1.8m | 300mV | - |
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RS Stock No.
765-3327
Mfr. Part No.PSA60R-240(RS)
BrandPhihong
|
£38.38
Each
Units
|
90 → 264V ac | 24 V dc | 2.5A | European Plug | - | - | Barrel | 60W | Power Adapter | 1 | 103mm | 1.5m | 240mV Pk-Pk | - |
|
RS Stock No.
679-6707
Mfr. Part No.8594004
BrandAnsmann
|
£17.48
Each
Units
|
100 → 240V ac | 3 V dc, 4.5 V dc, 5 V dc, 6 V dc, 7.5 V dc, 9 V dc, 12 V dc | - | Type G - British 3-Pin | - | - | 1.35 x 3.5 x 10 mm Hollow Plug, 1.7 x 4 x 10 mm Hollow Plug, 2.1 x 5 x 12 mm Hollow Plug, 2.35 x 0.75 x 10 mm Hollow Plug, 2.5 x 5.5 x 12 mm Hollow Plug, 3.5 x 15 mm Jack Plug | 16.8W | Switched Mode Power Supply | 1 | 82mm | 1.8m | 300mV | - |
|
RS Stock No.
123-5272
Mfr. Part No.T6143DV
BrandStontronics
|
£4.95
Each (In a Box of 60)
Units
|
90 → 264V ac | 5.1 V | 2.5A | European Plug | - | Socket | Micro USB | 13W | Power Supply | 1 | 73.2mm | 1.5m | <120mV | - |
|
RS Stock No.
765-3323
Mfr. Part No.PSA60R-120
BrandPhihong
|
£38.38
Each
Units
|
90 → 264V ac | 12 V dc | 5A | European Plug | - | - | Barrel | 60W | Power Adapter | 1 | 103mm | 1.25m | 150mV Pk-Pk | - |
|
RS Stock No.
478-4689
Mfr. Part No.MW1P100FK
BrandOEP
|
£16.72
Each
Units
|
120V ac | 230 V ac | - | Type G - British 3-Pin | - | - | - | 100W | Converter Module | - | 130mm | - | - | - |
|
RS Stock No.
469-3959
Mfr. Part No.MW2P045UK
BrandOEP
|
£9.33
Each
Units
|
240V ac | 120 V ac | - | Type G - British 3-Pin | - | Socket | - | 45W | Power Adapter | 1 | 62mm | - | - | - |
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Mascot, 18VA Plug In Power Supply 12V ac, 1.5A, 1 Output Linear Power Supply, Type G - British 3-Pin
RS Stock No.
400-6541
Mfr. Part No.9780000045
BrandMascot
|
£15.82
Each
Units
|
230V ac | 12 V ac | 1.5A | Type G - British 3-Pin | - | - | 1 x 2.1 mm with Snap-Lock, 1 x 2.5 mm with Snap-Lock | 18VA | Linear Power Supply | 1 | 83mm | 2m | - | - |
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RS Stock No.
731-6068
BrandRS PRO
|
£16.94
Each
Units
|
90 → 264V ac | 12 V dc | 3A | European Plug | - | - | 2.5 x 5.5 x 9.5 mm Centre Positive | 36W | - | 1 | 98mm | 1.2m | ±1.3% | - |
|
RS Stock No.
472-8572
Mfr. Part No.MPP15 12V MED
BrandFriwo
|
£43.25
Each
Units
|
100 → 240V ac | 12 V dc | 1.25A | European Plug | - | - | 1.3 x 3.5 x 9.5 mm Female Coaxial Plug, 1.7 x 4 x 11 mm Female Coaxial Plug, 2.1 x 5.5 x 11.5 mm Female Coaxial Plug, 2.1 x 5.5 x 9.5 mm Female Coaxial Plug, 2.5 x 13 mm Jack Plug, 2.5 x 5.5 x 9.5 mm Female Coaxial Plug, 3.5 x 14 mm Jack Plug | 15W | Switched Mode Power Supply | 1 | 87.5mm | 2m | 120mV Pk-Pk | Yes |
|
RS Stock No.
121-7163
Mfr. Part No.VEL24US240-UK-JA
BrandXP Power
|
£10.98
Each
Units
|
90 → 264V ac | 24 V dc | 1A | UK | - | - | 5.5 x 2.1 x 12 DC Plug mm | 24W | Switched Mode Power Supply | 1 | 90mm | 1.5m | 200mV Pk-Pk | - |
|
RS Stock No.
706-6518
Mfr. Part No.GE24I12-P1J
BrandMean Well
|
£18.17
Each
Units
|
90 → 264V ac | 12 V dc | 2A | European Plug | - | - | P1J | 24W | Switched Mode Power Supply | 1 | 81mm | 1m | 120mV Pk-Pk | - |
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