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.

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 its important to check whether its 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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Description Price Input Voltage Type Output Voltage Plug Type Output Current Maximum Temperature Output Connector Input Connector Number of Outputs Power Rating Length Regulated/Unregulated Cable Length Medical Approved
RS Stock No. 121-7206
Mfr. Part No.VER18US090-JA
BrandXP Power
HK$137.24
Each
units
100 V ac, 110 V ac, 115 V ac, 120 V ac, 127 V ac, 220 V ac, 230 V ac, 240 V ac Switched Mode Power Supply 9 V dc Interchangeable 2A +60°C 2.1 x 5.5 x 12 mm Centre Positive Universal Plug 1 18W 90.5mm - 1.5m -
RS Stock No. 121-7145
Mfr. Part No.VEL18US090-UK-JA
BrandXP Power
HK$125.12
Each
units
100 V ac, 110 V ac, 115 V ac, 120 V ac, 127 V ac, 220 V ac, 230 V ac, 240 V ac Switched Mode Power Supply 9 V dc Type G 2A +60°C 2.1 x 5.5 x 12 mm Centre Positive UK Plug 1 18W 90mm - 1.5m -
RS Stock No. 121-7183
Mfr. Part No.VEP24US12
BrandXP Power
HK$159.59
Each
units
100 V ac, 110 V ac, 115 V ac, 120 V ac, 127 V ac, 220 V ac, 230 V ac, 240 V ac Switched Mode Power Supply 12 V dc Interchangeable 2A +40°C 2.5 x 5.5 x 11 mm Centre Positive Universal Plug 1 24W 88mm - 1.5m Yes
RS Stock No. 121-7172
Mfr. Part No.VEP08US12
BrandXP Power
HK$120.70
Each
units
100 V ac, 110 V ac, 115 V ac, 120 V ac, 127 V ac, 220 V ac, 230 V ac, 240 V ac Switched Mode Power Supply 12 V dc Interchangeable 660mA +40°C 2.5 x 5.5 x 11 mm Centre Positive Universal Plug 1 8W 72mm - 1.8m Yes
RS Stock No. 121-7170
Mfr. Part No.VEP08US05
BrandXP Power
HK$120.70
Each
units
100 V ac, 110 V ac, 115 V ac, 120 V ac, 127 V ac, 220 V ac, 230 V ac, 240 V ac Switched Mode Power Supply 5 V dc Interchangeable 1.6A +40°C 2.5 x 5.5 x 11 mm Centre Positive Universal Plug 1 8W 72mm - 1.8m Yes
RS Stock No. 121-7215
Mfr. Part No.VER24US150-JA
BrandXP Power
HK$167.75
Each
units
100 V ac, 110 V ac, 115 V ac, 120 V ac, 127 V ac, 220 V ac, 230 V ac, 240 V ac Switched Mode Power Supply 15 V dc Interchangeable 1.5A +60°C 2.1 x 5.5 x 12 mm Centre Positive Universal Plug 1 24W 90.5mm - 1.5m -
RS Stock No. 121-7179
Mfr. Part No.VEP24US05
BrandXP Power
HK$153.74
Each
units
100 V ac, 110 V ac, 115 V ac, 120 V ac, 127 V ac, 220 V ac, 230 V ac, 240 V ac Switched Mode Power Supply 5 V dc Interchangeable 2.5A +40°C 2.5 x 5.5 x 11 mm Centre Positive Universal Plug 1 12.5W 88mm - 1.5m Yes
RS Stock No. 121-7119
Mfr. Part No.VEL05US050-UK-JA
BrandXP Power
HK$62.72
Each
units
100 V ac, 110 V ac, 115 V ac, 120 V ac, 127 V ac, 220 V ac, 230 V ac, 240 V ac Switched Mode Power Supply 5 V dc Type G 1A +60°C 2.1 x 5.5 x 12 mm Centre Positive UK Plug 1 5W 55.1mm - 1.5m -
RS Stock No. 123-4862
Mfr. Part No.VEL36US120-US-JA
BrandXP Power
HK$182.96
Each
units
100 V ac, 110 V ac, 115 V ac, 120 V ac, 127 V ac, 220 V ac, 230 V ac, 240 V ac Switched Mode Power Supply 12 V dc Type A 3A +45°C 2.1 x 5.5 x 12 mm Centre Positive US Plug 1 36W - - - -
RS Stock No. 123-4863
Mfr. Part No.VEL36US150-US-JA
BrandXP Power
HK$182.96
Each
units
100 V ac, 110 V ac, 115 V ac, 120 V ac, 127 V ac, 220 V ac, 230 V ac, 240 V ac Switched Mode Power Supply 15 V dc Type A 2.4A +45°C 2.1 x 5.5 x 12 mm Centre Positive US Plug 1 36W - - - -
RS Stock No. 123-4864
Mfr. Part No.VEL36US180-US-JA
BrandXP Power
HK$182.96
Each
units
100 V ac, 110 V ac, 115 V ac, 120 V ac, 127 V ac, 220 V ac, 230 V ac, 240 V ac Switched Mode Power Supply 18 V dc Type A 2A +45°C 2.1 x 5.5 x 12 mm Centre Positive US Plug 1 36W - - - -
RS Stock No. 123-4865
Mfr. Part No.VEL36US240-US-JA
BrandXP Power
HK$182.96
Each
units
100 V ac, 110 V ac, 115 V ac, 120 V ac, 127 V ac, 220 V ac, 230 V ac, 240 V ac Switched Mode Power Supply 24 V dc Type A 1.5A +45°C 2.1 x 5.5 x 12 mm Centre Positive US Plug 1 36W - - - -
RS Stock No. 121-7131
Mfr. Part No.VEL05US090-US-JA
BrandXP Power
HK$61.44
Each
units
100 V ac, 110 V ac, 115 V ac, 120 V ac, 127 V ac, 220 V ac, 230 V ac, 240 V ac Switched Mode Power Supply 9 V dc Type A 550mA +60°C 2.1 x 5.5 x 12 mm Centre Positive US Plug 1 5W 55.1mm - 1.5m -
RS Stock No. 123-4866
Mfr. Part No.VEL36US120-UK-JA
BrandXP Power
HK$182.96
Each
units
100 V ac, 110 V ac, 115 V ac, 120 V ac, 127 V ac, 220 V ac, 230 V ac, 240 V ac Switched Mode Power Supply 12 V dc Type G 3A +45°C 2.1 x 5.5 x 12 mm Centre Positive UK Plug 1 36W - - - -
RS Stock No. 123-4875
Mfr. Part No.VER36US150-JA
BrandXP Power
HK$195.18
Each
units
100 V ac, 110 V ac, 115 V ac, 120 V ac, 127 V ac, 220 V ac, 230 V ac, 240 V ac Switched Mode Power Supply 15 V dc Interchangeable 2.4A +40°C 2.1 x 5.5 x 12 mm Centre Positive Universal Plug 1 36W - - - -
RS Stock No. 121-7189
Mfr. Part No.VER05US050-JA
BrandXP Power
HK$70.76
Each
units
100 V ac, 110 V ac, 115 V ac, 120 V ac, 127 V ac, 220 V ac, 230 V ac, 240 V ac Switched Mode Power Supply 5 V dc Interchangeable 1A +60°C 2.1 x 5.5 x 12 mm Centre Positive Universal Plug 1 5W 37mm - 1.5m -
RS Stock No. 121-7132
Mfr. Part No.VEL05US120-EU-JA
BrandXP Power
HK$61.44
Each
units
100 V ac, 110 V ac, 115 V ac, 120 V ac, 127 V ac, 220 V ac, 230 V ac, 240 V ac Switched Mode Power Supply 12 V dc Type C 420mA +60°C 2.1 x 5.5 x 12 mm Centre Positive EU Plug 1 5W 55.1mm - 1.5m -
RS Stock No. 123-4867
Mfr. Part No.VEL36US150-UK-JA
BrandXP Power
HK$182.96
Each
units
100 V ac, 110 V ac, 115 V ac, 120 V ac, 127 V ac, 220 V ac, 230 V ac, 240 V ac Switched Mode Power Supply 15 V dc Type G 2.4A +45°C 2.1 x 5.5 x 12 mm Centre Positive UK Plug 1 36W - - - -
RS Stock No. 172-0725
Mfr. Part No.ACM36US24
BrandXP Power
HK$182.96
Each
units
100 V ac, 110 V ac, 115 V ac, 120 V ac, 127 V ac, 220 V ac, 230 V ac, 240 V ac Power Adapter 24 V dc Interchangeable 1.5A +60°C 2.5 x 5.5 x 11 mm Centre Positive Universal Plug 1 36W 96.7mm - 1.5m Yes
RS Stock No. 121-7138
Mfr. Part No.VEL12US090-EU-JA
BrandXP Power
HK$97.59
Each
units
100 V ac, 110 V ac, 115 V ac, 120 V ac, 127 V ac, 220 V ac, 230 V ac, 240 V ac Switched Mode Power Supply 9 V dc Type C 1.28A +60°C 2.1 x 5.5 x 12 mm Centre Positive EU Plug 1 12W 76mm - 1.5m -