الوصف
A 9V 2A UK plug (barrel jack) power supply converts AC wall power to a stable DC output for various devices, featuring a common 5.5mm x 2.1mm or 5.5mm x 2.5mm center-positive barrel plug, universal input voltage (100-240V), and built-in protections like short circuit, over-voltage, and over-temperature protection. This type of adapter is widely used for electronics such as Arduino boards, exercise equipment, routers, and LED lighting.
Features
- Input Voltage: Universal AC input, typically 100-240V at 50/60Hz, suitable for use in the UK and internationally.
- Output Voltage: Fixed DC output of 9 volts (9V).
- Output Current: Maximum output current of 2 amps (2A or 2000mA), allowing for devices that draw up to this amount.
- Maximum Wattage: 18 watts (9V x 2A = 18W).
- Connector: A standard barrel jack with a 5.5mm outer diameter and either a 2.1mm or 2.5mm inner diameter.
- Polarity: Center-positive (+), meaning the positive terminal is in the center of the barrel and the negative is on the outside sleeve.
- Safety Protections: Integrated features such as short circuit, overload, and over-voltage protection to prevent damage to the power supply and connected devices.
- Cable Length: Varies by manufacturer, but often includes a cable of sufficient length for positioning devices conveniently.