LM317 Adjustable Linear Voltage Regulator DIY Power Supply Kit

Build your own reliable, adjustable power supply with this LM317 Linear Voltage Regulator DIY Kit. Whether you're a hobbyist, electronics student, or maker, this kit gives you everything you need to assemble a fully functional adjustable DC power supply — perfect for breadboard prototyping, lab bench use, or learning the fundamentals of linear voltage regulation.

Why You'll Love This Kit

Adjustable Output Voltage: The LM317 IC allows smooth, continuous voltage adjustment, making it versatile for a wide range of DIY electronics projects.
Resettable Fuse Included: Built-in resettable fuse (polyfuse) protects your circuit automatically — no need to replace blown fuses.
Electrolytic Capacitors: High-quality capacitors are included to filter output ripple and stabilize voltage for clean, steady power delivery.
Customizable Build: Sold as a DIY kit — assemble it yourself for a hands-on learning experience or to tailor it to your exact project specs.
Compact Module Design: Neat PCB layout keeps your workbench organized and fits easily into enclosures or project boxes.
Broad Compatibility: Ideal for powering microcontrollers, sensors, LEDs, small motors, and other low-voltage electronics.

What's Inside the Box

LM317 Linear Voltage Regulator IC
PCB module board
Resettable fuse (polyfuse)
Electrolytic capacitors
Resistors and supporting passive components
Full DIY assembly kit

Technical Highlights

IC: LM317 adjustable linear voltage regulator
Input: Suitable for standard DC input voltages (refer to LM317 datasheet for full specs)
Output: Continuously adjustable DC voltage
Protection: Resettable polyfuse for overcurrent protection
Filtering: Electrolytic capacitor for smooth, ripple-free output
Form Factor: Compact PCB module

Perfect For

Electronics hobbyists and makers
Engineering students learning power supply design
DIY lab bench power supplies
Prototyping and breadboard projects
STEM education and classroom demonstrations

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Frequently Asked Questions

Q: What does the LM317 Adjustable Linear Voltage Regulator DIY Kit include?

A: The kit includes an LM317 voltage regulator IC, a PCB module board, a resettable polyfuse for overcurrent protection, electrolytic capacitors for output filtering, resistors, and all supporting passive components needed for assembly. Everything arrives as a DIY kit for hands-on building.

Q: What output voltage range does the LM317 module support?

A: The LM317 IC supports a continuously adjustable output voltage, typically from approximately 1.25V up to 37V (depending on input voltage and resistor values used). This makes it extremely flexible for powering a wide variety of electronics projects. Please consult the LM317 datasheet for full electrical specifications.

Q: Is this kit suitable for beginners in electronics?

A: Yes! This DIY kit is a fantastic learning project for beginners and students. Assembling a linear voltage regulator from components teaches core electronics concepts including soldering, voltage regulation, capacitor filtering, and circuit protection. Basic soldering skills are recommended for assembly.

Q: What is the resettable fuse (polyfuse) used for in this kit?

A: The resettable polyfuse automatically limits current in the event of an overcurrent situation, protecting your circuit and components. Unlike a traditional fuse that must be replaced, a polyfuse resets itself once the fault is cleared and the device cools down — saving time and cost.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.