{"product_id":"lm317-adjustable-dc-power-supply-diy-soldering-kit-with-case","title":"LM317 Adjustable DC Power Supply DIY Soldering Kit with Case","description":"\n\u003ch2\u003eLM317 Adjustable Regulated DC Power Supply DIY Soldering Kit\u003c\/h2\u003e\n\u003cp\u003eBuild 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.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAdjustable Voltage Output:\u003c\/strong\u003e 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.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAdjustable Signal Generator:\u003c\/strong\u003e Built-in signal generator output lets you supply pulse signals directly to your test circuit for easy debugging.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLogic Pen Function:\u003c\/strong\u003e Quickly probe and verify logic levels on any circuit node without extra equipment.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eContinuity Buzzer:\u003c\/strong\u003e 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.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTransparent Enclosure Included:\u003c\/strong\u003e Four-screw transparent plastic shell protects the assembled board and lets you show off your soldering work.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGreat for Learning \u0026amp; Teaching:\u003c\/strong\u003e Designed specifically for electronics training, classroom teaching, and beginner soldering practice.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.25V – 12V (adjustable)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e200 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSupply Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eEU 220V \/ USA 110V\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTransformer Power\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2.5W\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Cord Length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 m\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Lead Length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShell Dimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e11.2 cm (L) × 6.9 cm (W) × 4 cm (H)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShell Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTransparent plastic (upper \u0026amp; lower covers, 4 screws)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePCB Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e7.2 cm × 6.2 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e270 g\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMainland China\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eImportant Notes Before Purchase\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eThis kit is intended for electronics enthusiasts with basic circuit assembly experience. Successful assembly is not guaranteed without prior soldering knowledge.\u003c\/li\u003e\n  \u003cli\u003eDue to the 200 mA output current limit, this supply is suitable only for small-current circuits. Excessive load will cause voltage drop.\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003eNot suitable for charging phones or powering high-current devices.\u003c\/strong\u003e\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBattery is NOT included\u003c\/strong\u003e in the package.\u003c\/li\u003e\n  \u003cli\u003ePlease read the full product description carefully before purchasing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat's in the Box\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eLM317 DC power supply PCB \u0026amp; all through-hole components\u003c\/li\u003e\n  \u003cli\u003eTransparent plastic enclosure with screws\u003c\/li\u003e\n  \u003cli\u003ePower cord (1 m)\u003c\/li\u003e\n  \u003cli\u003eOutput leads (20 cm)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/electromagnetic-induction-tester-coil-motherboard-fault-detector\"\u003eElectromagnetic Induction Tester – Coil \u0026amp; Circuit Fault Detector\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/air-compressor-pressure-gauge-0-10-0-12-0-25-bar-hydraulic-diy\"\u003eAir Compressor Pressure Gauge 0-10\/0-12\/0-25 Bar | DIY Tool\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/eye-face-protection\" target=\"_blank\" rel=\"noopener\"\u003eOSHA on eye and face protection\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: Is this LM317 power supply kit suitable for complete beginners with no soldering experience?\u003c\/h4\u003e\n\u003cp\u003eA: 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.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What voltage range does the LM317 adjustable regulated power supply output?\u003c\/h4\u003e\n\u003cp\u003eA: 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.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Can I use this kit to charge my smartphone or power larger devices?\u003c\/h4\u003e\n\u003cp\u003eA: 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.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Does the kit work with both 110V (USA) and 220V (EU) mains power?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The included transformer supports both EU 220V and USA 110V mains supply, making it compatible with standard wall outlets in both regions.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Is this LM317 power supply kit suitable for complete beginners with no soldering experience?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"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. 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