{"product_id":"9v-1a-power-supply-adapter-for-arduino-diy-projects-compoden","title":"9V 1A Power Supply Adapter for Arduino \u0026 DIY Projects - Compoden","description":"\u003ch1\u003e9V 1A Power Supply Unit – DC Adapter with Barrel Jack\u003c\/h1\u003e\n\n\u003cp\u003eThe 9V 1A PSU is a regulated DC power adapter designed for powering microcontrollers, development boards, and small electronics projects. It provides a stable 9-volt output at up to 1 ampere, making it suitable for Arduino boards, breadboard circuits, and sensor modules. The reliable power delivery ensures consistent performance without voltage spikes.\u003c\/p\u003e\n\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOutput Voltage\u003c\/td\u003e\n\u003ctd\u003e9V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOutput Current\u003c\/td\u003e\n\u003ctd\u003e1A (maximum)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eConnector Type\u003c\/td\u003e\n\u003ctd\u003e2.1mm barrel jack\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003ePolarity\u003c\/td\u003e\n\u003ctd\u003eCenter positive\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eInput Voltage\u003c\/td\u003e\n\u003ctd\u003e100-240V AC, 50\/60Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/kit-indoor-weather-station\"\u003eArduino Uno-powered weather station\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/kit-motion-alarm\"\u003eBreadboard prototype for motion sensor alarm\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003eDesktop IoT monitor with ESP8266\u003c\/li\u003e\n  \u003cli\u003ePortable electronic display board\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThis power supply is compatible with any device requiring 9V DC and a 2.1mm center-positive barrel jack. It works directly with Arduino Uno and Mega boards via the DC jack, as well as with most breadboard power modules. For lower voltage boards like 3.3V or 5V systems, use a suitable voltage regulator.\u003c\/p\u003e\n\n\u003ch2\u003eWiring Notes\u003c\/h2\u003e\n\u003cp\u003eThe barrel jack uses a standard 2.1mm inner diameter with center positive. Connect the adapter output to your board's DC input jack; no additional wiring is needed for Arduino. For custom circuits, wire the positive to your voltage rail and negative to ground, ensuring the total current draw does not exceed 1A.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Buy from Compoden\u003c\/h2\u003e\n\u003cp\u003eEvery 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.\u003c\/p\u003e\n\n\u003cdetails\u003e\u003csummary\u003eIs this compatible with Arduino Uno?\u003c\/summary\u003e\u003cp\u003eYes, the 9V 1A PSU is fully compatible with Arduino Uno. It supplies the recommended input voltage and ample current for most Uno projects.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eCan I use this for a Raspberry Pi?\u003c\/summary\u003e\u003cp\u003eThe Raspberry Pi requires 5V micro USB power. This 9V adapter is not directly compatible; however, you can use a DC-DC step-down converter to adapt the output for Pi projects.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat is the plug size?\u003c\/summary\u003e\u003cp\u003eThe connector has a 2.1mm inner diameter barrel plug, which is standard for most development boards and electronics equipment.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv class=\"compoden-handoff\" style=\"margin-top:24px;padding:16px;background:#f0f4ff;border-left:4px solid #2B4D8F;border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 6px 0;font-weight:600;color:#1A3560;\"\u003e📦 Free Setup Handoff Document Included\u003c\/p\u003e\n  \u003cp style=\"margin:0;font-size:0.95em;color:#333;\"\u003eEvery 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.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53445080940909,"sku":"CDN-0937","price":240.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/download_c17c95dc-1ae9-44e7-ae2f-048070823449.jpg?v=1781522886","url":"https:\/\/compoden.com\/products\/9v-1a-power-supply-adapter-for-arduino-diy-projects-compoden","provider":"Compoden","version":"1.0","type":"link"}