Adjustable DC Power Supply Adapter – 3V-12V, 5A, 60W, Digital Display, 100-240V AC Input

This adjustable DC power supply adapter delivers a continuously variable output from 3V to 12V DC at up to 5A, with a maximum power rating of 60W. It accepts a universal AC input of 100-240V at 50/60Hz, making it usable in most regions without a separate voltage converter. A front-mounted potentiometer knob adjusts the output voltage, and a digital LED display shows the set voltage in real time, allowing precise matching to the device being powered. The unit is built as a desktop-style power supply with a barrel jack output (2.1mm × 5.5mm, center-positive) and includes a detachable AC power cord. Because the output is adjustable across the full 3-12V range, this universal power adapter can replace a drawer full of fixed-voltage supplies for LED strips, routers, smart speakers, TV boxes, USB hubs, DC motors, and other small electronics that operate below 5A.

Integrated protection circuits cover overvoltage, overcurrent, short circuit, and overheating conditions. The housing measures approximately 11.8 × 5 × 3.2 cm and includes mounting holes for permanent installation on a bench or panel. This variable voltage power supply is a practical choice for makers, technicians, and anyone who needs a single adjustable source for a range of low-voltage devices.

1. Powering 3V, 5V, 6V, 9V, and 12V LED strips and lighting modules.
2. Bench testing and powering electronics prototypes and robotics projects.
3. Replacing fixed-voltage adapters for routers, smart speakers, and TV boxes.
4. Driving small DC motors, pumps, and fans rated below 5A.
5. Powering USB hubs, hard drive enclosures, and audio devices.
6. General laboratory and repair work requiring a variable DC source.

1. Product type: adjustable desktop DC power supply adapter.
2. Input voltage: 100-240V AC.
3. Input frequency: 50/60Hz.
4. Output voltage: 3V to 12V DC, continuously adjustable.
5. Maximum output current: 5A.
6. Maximum output power: 60W.
7. Voltage adjustment: front potentiometer knob.
8. Display: digital LED voltage display.
9. Output connector: 2.1mm × 5.5mm barrel jack, center-positive.
10. AC power cord: detachable, included.
11. Protection: overvoltage, overcurrent, short circuit, and overheating protection.
12. Housing dimensions (L × W × H): approximately 11.8 × 5 × 3.2 cm.
13. Mounting: integrated mounting holes.