LM317 Adjustable Regulator Board — Precise, stable, and easytouse adjustable DC power for development and testing Key benefits Precise voltage control: LM317based regulation gives you fine, reliable adjustment across the full output range so you can power and test sensitive circuits without guesswork. Stable performance: Doublesided PCB and frequency power capacitors improve electrical stability and reduce noise for cleaner supply rails. Effective thermal management: Builtin heat sink helps dissipate heat under load, reducing thermal stress and improving longterm reliability. Simple monitoring and control: Integrated digital display provides quick, accurate readout of output voltage for faster setup and troubleshooting. Wide compatibility: Accepts DC inputs from 3–30V and produces an adjustable output from 1.25–28V, making it suitable for many common electronics workflows. What this board does (function) Provides a compact, adjustable DC power source using an LM317 regulator. Lets you set and monitor output voltage precisely with an onboard digital display. Delivers stable, lownoise power thanks to doublesided PCB construction and frequency power capacitors, while the heat sink manages thermal load. Important attributes Regulator: LM317 adjustable regulator Input range: DC 3–30V Adjustable output: 1.25–28V Construction: Doublesided circuit board with frequency power capacitors Cooling: Integrated heat sink Monitoring: Digital voltage display Practical use scenarios Laboratory bench testing: Use the board as a reliable, adjustable bench supply to power and measure circuits during component testing and characterization. Prototype and product development: Provide controlled voltages during circuit debugging, firmware development, and iterative hardware testing. Electronics projects and : Ideal for hobbyist projects, small batch builds, and troubleshooting electronics where variable and stable DC power is required. Why choose this board Reduces setup time and measurement errors by combining a precision LM317 regulator with onboard monitoring. Improves test repeatability and protects components with stable, lownoise output and thermal management. Broad input/output ranges make it compatible with a wide variety of DC sources and applications. Specifications summary LM317 adjustable regulator board Input: DC 3–30V Output: adjustable 1.25–28V Doublesided PCB, frequency power capacitors, integrated heat sink, digital display Use this board to add a compact, accurate, and thermally robust variable power source to your lab bench, prototype setup, or electronics projects.