12V 2A DC Adapter – Reliable Power Supply for Projects
12V 2A DC Power Adapter
The 12V 2A DC power adapter provides a stable 12V output for your electronics projects. It is ideal for powering microcontrollers, motors, LEDs, and other DC devices requiring a reliable power source. The included barrel jack connector with center-positive polarity ensures easy connection to most development boards and modules.
Key Specifications
| Specification | Value |
|---|---|
| Input Voltage | AC 100-240V 50/60Hz |
| Output Voltage | DC 12V |
| Output Current | 2A |
| Connector Type | 5.5mm x 2.1mm barrel jack |
| Polarity | Center positive |
| Cable Length | Approximately 1 meter |
What You Can Build With This
- Power an Arduino Uno and a 12V relay module for home automation projects.
- Drive a small to medium DC motor with a motor driver for robotics applications.
- Supply power to a Raspberry Pi via a 5V step-down converter for a compact computer setup.
- Light up a 12V LED strip for decorative or functional lighting solutions.
Compatibility
This adapter works with any device that accepts 12V DC through a 5.5mm x 2.1mm barrel jack. It is commonly used with Arduino Uno and Mega (via the onboard regulator capable of handling up to 12V), Raspberry Pi (with an external 5V regulator), and 12V LED strips. Ensure your total current draw does not exceed 2A to avoid overloading.
Wiring Notes
Simply plug the barrel jack into your device’s power port. If you need bare wire connections, you can cut the jack off, but always verify polarity—center pin is positive, outer sleeve is negative. For projects requiring more than 2A, select a higher-rated adapter to prevent voltage drop or overheating.
Why Buy from Compoden
Every component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.
Is this compatible with Arduino?
Yes, the 12V adapter can power Arduino Uno and Mega through the barrel jack or VIN pin. The onboard voltage regulator accepts 7-12V, so 12V is safe as long as the current requirements of your setup are within the adapter's 2A limit.
Can I use this to power a 5V device?
Directly connecting 12V to a 5V device will damage it. Use a voltage regulator or buck converter to step down the voltage to 5V. This adapter can supply the input for such a converter, which then powers your 5V gear safely.
What is the connector size and polarity?
The adapter ends in a standard 5.5mm outer diameter and 2.1mm inner diameter barrel jack. Polarity is center positive, meaning the tip is positive and the outer barrel is negative. Always confirm your device accepts this configuration.
📦 Free Setup Handoff Document Included
Every Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.
What you can build with this
Shipping Information
- Prepaid Orders: ₹75 for orders up to ₹999, FREE shipping above ₹999
- COD Orders: ₹125 shipping + ₹50 COD fee = ₹175 total
- Delivery Timeline: Dispatch in 1-2 days, delivery in 2-7 days depending on location
Returns & Warranty
- 7-Day Return: Manufacturing defects only (approval required)
- Warranty: 7 days from delivery
- Non-Returnable: Batteries, consumables, cut wires, clearance items