12V 1A DC Power Supply | 12W Adapter for Electronics & IoT
12V 1A DC Power Supply (12W) – Stable Regulated Output
The 12V 1A PSU provides a regulated 12V DC output from standard AC mains, delivering up to 1 ampere for your electronics projects. It is ideal for powering microcontroller development boards, LED strips, small motors, and other devices that require a stable 12V source. Built-in protections against overcurrent and short circuits help ensure safe, uninterrupted operation.
Key Specifications
| Specification | Value |
|---|---|
| Input Voltage | 100-240V AC, 50/60Hz |
| Output Voltage | 12V DC (regulated) |
| Output Current | 1A (maximum) |
| Power Rating | 12W |
| Connector | 5.5mm x 2.1mm barrel, center positive |
| Protection | Overcurrent, short circuit, overvoltage |
What You Can Build With This
- Power an Arduino Uno or Mega directly via the barrel jack for prototyping and long-running projects.
- Drive a 1-meter strip of 12V LED lighting for accent or task illumination.
- Run small 12V DC motors or fans in robotics or cooling applications.
- Create a compact benchtop power supply by pairing with a buck converter for adjustable voltage.
Compatibility
This adapter works with any device that accepts 12V DC within a 1A limit. It is commonly used with Arduino boards (Uno, Mega, Nano via Vin) that have an onboard regulator stepping down to 5V. For Raspberry Pi, a separate 12V-to-5V step-down converter is required. Always verify your device’s voltage and current requirements before connecting.
Wiring Notes
Plug the DC barrel jack into your board’s power input—center positive is the standard for most development kits. Avoid drawing more than 1A continuously to prevent overheating or voltage drop. When powering inductive loads like motors, adding a 100µF electrolytic capacitor across the output can help stabilize the supply.
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 Uno?
Yes, the included 5.5mm x 2.1mm barrel plug fits the Uno’s power jack. The board’s voltage regulator safely converts 12V to 5V for the microcontroller.
Can I use this to power a Raspberry Pi?
Raspberry Pi requires a 5V supply, so you will need a step-down converter to reduce the 12V output to 5V. This PSU can then serve as the primary source for the converter.
What is the connector size?
The DC connector has a 5.5mm outer diameter and 2.1mm inner diameter, with center positive polarity. This is the standard size used by most Arduino boards and common development kits.
📦 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