LM317 Adjustable DC Power Supply DIY Soldering Kit with Case

$34.84 $42.94

LM317 Adjustable Regulated DC Power Supply DIY Soldering Kit

Build your own fully functional adjustable DC power supply with this hands-on LM317 DIY soldering kit. Ideal for electronics students, hobbyists, and makers, this kit comes complete with all components and a transparent plastic enclosure — everything you need to assemble a compact, versatile bench power supply from scratch. Made in Mainland China.

Key Features

Adjustable Voltage Output: Dial in any voltage from 1.25V to 12V using the onboard LM317 regulator — perfect for powering a wide range of small DIY circuits and experiments.
Adjustable Signal Generator: Built-in signal generator output lets you supply pulse signals directly to your test circuit for easy debugging.
Logic Pen Function: Quickly probe and verify logic levels on any circuit node without extra equipment.
Continuity Buzzer: A single-channel buzzer lets you test wire continuity and detect low-frequency signals — the buzzer sounds when a connection is made or a signal is present.
Transparent Enclosure Included: Four-screw transparent plastic shell protects the assembled board and lets you show off your soldering work.
Great for Learning & Teaching: Designed specifically for electronics training, classroom teaching, and beginner soldering practice.

Specifications

Output Voltage	1.25V – 12V (adjustable)
Output Current	200 mA
Supply Voltage	EU 220V / USA 110V
Transformer Power	2.5W
Power Cord Length	1 m
Output Lead Length	20 cm
Shell Dimensions	11.2 cm (L) × 6.9 cm (W) × 4 cm (H)
Shell Material	Transparent plastic (upper & lower covers, 4 screws)
PCB Size	7.2 cm × 6.2 cm
Product Weight	270 g
Country of Origin	Mainland China

Important Notes Before Purchase

This kit is intended for electronics enthusiasts with basic circuit assembly experience. Successful assembly is not guaranteed without prior soldering knowledge.
Due to the 200 mA output current limit, this supply is suitable only for small-current circuits. Excessive load will cause voltage drop.
Not suitable for charging phones or powering high-current devices.
Battery is NOT included in the package.
Please read the full product description carefully before purchasing.

What's in the Box

LM317 DC power supply PCB & all through-hole components
Transparent plastic enclosure with screws
Power cord (1 m)
Output leads (20 cm)

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Frequently Asked Questions

Q: Is this LM317 power supply kit suitable for complete beginners with no soldering experience?

A: This DIY soldering kit is best suited for those with at least basic soldering experience. It makes an excellent learning project for electronics students and hobbyists, but no guarantee of successful assembly can be made for those with zero prior circuit-building knowledge. Read all instructions carefully before starting.

Q: What voltage range does the LM317 adjustable regulated power supply output?

A: The kit delivers an adjustable DC output ranging from 1.25V to 12V, controlled by the onboard LM317 voltage regulator. This makes it suitable for powering a wide range of small electronic circuits, microcontrollers, and test setups.

Q: Can I use this kit to charge my smartphone or power larger devices?

A: No. The maximum output current is 200 mA, which is not sufficient to charge a smartphone or run high-current devices. It is designed exclusively for low-current DIY circuits, breadboard experiments, and educational use.