{"product_id":"lm317-lm337-adjustable-linear-dc-power-supply-module","title":"LM317 LM337 Adjustable Dual DC Linear Power Supply Module","description":"\n\u003ch2\u003eLM317 \u0026amp; LM337 Dual Positive\/Negative Adjustable Linear DC Power Supply Module\u003c\/h2\u003e\n\u003cp\u003eTake full control of your electronics projects with this versatile \u003cstrong\u003eLM317 \u0026amp; LM337 dual-rail linear power supply module\u003c\/strong\u003e. Designed for engineers, hobbyists, and electronics enthusiasts, this compact buck step-down board delivers both positive and negative adjustable output voltages — making it ideal for op-amp circuits, audio amplifiers, sensor platforms, and custom embedded systems that require a symmetric dual-rail supply.\u003c\/p\u003e\n\n\u003cp\u003eThe module pairs the classic \u003cstrong\u003eLM317 positive voltage regulator\u003c\/strong\u003e with the \u003cstrong\u003eLM337 negative voltage regulator\u003c\/strong\u003e, allowing you to independently tune each rail with precision. Its linear regulation design ensures a clean, low-noise output — essential for sensitive analog and audio applications.\u003c\/p\u003e\n\n\u003ch3\u003eKey Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eModule Models:\u003c\/strong\u003e LM317 (positive) \u0026amp; LM337 (negative)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eModule Type:\u003c\/strong\u003e Linear Power Supply\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInput Voltage:\u003c\/strong\u003e ±3V to ±40V\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutput Voltage:\u003c\/strong\u003e ±1.25V to ±37V (adjustable)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutput Current:\u003c\/strong\u003e 1A (MAX)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEU LVD Compliance:\u003c\/strong\u003e Low voltage — below 50V AC or 75V DC\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy Choose This Power Module?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eDual-rail output\u003c\/strong\u003e — simultaneous positive and negative adjustable rails for symmetric power supply needs\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eWide input range\u003c\/strong\u003e — accepts ±3V to ±40V input for flexible bench and in-circuit use\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eLow-noise linear regulation\u003c\/strong\u003e — ideal for audio, RF, and precision analog circuits\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eCompact board design\u003c\/strong\u003e — easy to integrate into enclosures or prototype builds\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eIndustry-standard ICs\u003c\/strong\u003e — built on the proven LM317\/LM337 chipset, widely documented and supported\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTypical Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eOperational amplifier (op-amp) dual-supply circuits\u003c\/li\u003e\n  \u003cli\u003eAudio preamplifier and amplifier boards\u003c\/li\u003e\n  \u003cli\u003eBench power supply builds and DIY lab equipment\u003c\/li\u003e\n  \u003cli\u003eSensor and instrumentation circuits\u003c\/li\u003e\n  \u003cli\u003eMicrocontroller and Arduino accessory power rails\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePackage Includes\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1× LM317 LM337 Power Supply Module\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cem\u003eNote: Due to lighting conditions and display screen variations, the actual product color may differ slightly from images shown. Please allow a measurement tolerance of 1mm–1cm due to manual measurement.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMade in Mainland China.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eFor more information on electrical safety standards for low-voltage electronics, visit the U.S. Consumer Product Safety Commission (CPSC). For safe electronics handling and workplace standards, refer to \u003ca href=\"https:\/\/www.osha.gov\/electrical\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eOSHA's Electrical Safety guidelines\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What is the difference between the LM317 and LM337 on this power supply module?\u003c\/h4\u003e\n\u003cp\u003eA: The LM317 is a positive adjustable voltage regulator that controls the positive rail of the power supply, while the LM337 is its negative counterpart, regulating the negative rail. Together on this board, they provide a symmetric dual-rail output (e.g., +12V and -12V simultaneously), which is commonly required in audio amplifier and op-amp circuit designs.\u003c\/p\u003e\n\u003ch4\u003eQ: What input voltage does this LM317 LM337 power supply module require?\u003c\/h4\u003e\n\u003cp\u003eA: The module accepts an input voltage range of ±3V to ±40V, making it compatible with a wide variety of AC-DC or DC-DC power sources. The output can then be adjusted between ±1.25V and ±37V depending on the resistor configuration on the board.\u003c\/p\u003e\n\u003ch4\u003eQ: Is this module suitable for audio amplifier projects?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. Linear power supply modules like this LM317\/LM337 board are particularly well-suited for audio applications because linear regulation produces significantly less electrical noise compared to switching (buck\/boost) regulators, resulting in cleaner power delivery to sensitive audio circuits.\u003c\/p\u003e\n\u003ch4\u003eQ: What is the maximum output current of this adjustable power supply board?\u003c\/h4\u003e\n\u003cp\u003eA: The module supports a maximum output current of 1A per rail. For applications requiring higher current, an external pass transistor can be added in conjunction with the LM317\/LM337 ICs, though this would require circuit modification beyond the stock board.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What is the difference between the LM317 and LM337 on this power supply module?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The LM317 is a positive adjustable voltage regulator that controls the positive rail of the power supply, while the LM337 is its negative counterpart, regulating the negative rail. Together on this board, they provide a symmetric dual-rail output (e.g., +12V and -12V simultaneously), which is commonly required in audio amplifier and op-amp circuit designs.\"}}, {\"@type\": \"Question\", \"name\": \"What input voltage does this LM317 LM337 power supply module require?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The module accepts an input voltage range of ±3V to ±40V, making it compatible with a wide variety of AC-DC or DC-DC power sources. The output can then be adjusted between ±1.25V and ±37V depending on the resistor configuration on the board.\"}}, {\"@type\": \"Question\", \"name\": \"Is this module suitable for audio amplifier projects?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. Linear power supply modules like this LM317\/LM337 board are particularly well-suited for audio applications because linear regulation produces significantly less electrical noise compared to switching (buck\/boost) regulators, resulting in cleaner power delivery to sensitive audio circuits.\"}}, {\"@type\": \"Question\", \"name\": \"What is the maximum output current of this adjustable power supply board?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The module supports a maximum output current of 1A per rail. For applications requiring higher current, an external pass transistor can be added in conjunction with the LM317\/LM337 ICs, though this would require circuit modification beyond the stock board.\"}}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"BreadcrumbList\", \"itemListElement\": [{\"@type\": \"ListItem\", \"position\": 1, \"name\": \"Home\", \"item\": \"https:\/\/kujrmc-0q.myshopify.com\/\"}, {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Electronics \u0026 Tech\", \"item\": \"https:\/\/kujrmc-0q.myshopify.com\/collections\/electronics-tech\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"LM317 LM337 Adjustable Dual DC Linear Power Supply Module\", \"item\": \"https:\/\/kujrmc-0q.myshopify.com\/products\/lm317-lm337-adjustable-linear-dc-power-supply-module\"}]}\u003c\/script\u003e","brand":"Vue","offers":[{"title":"Default Title","offer_id":48748250300608,"sku":"\u003cnone\u003e","price":46.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0772\/9338\/7968\/files\/Sb3e32c57c51248a882d462d7677e1b49i.webp?v=1786202146","url":"https:\/\/vueselect.com\/products\/lm317-lm337-adjustable-linear-dc-power-supply-module","provider":"Vue","version":"1.0","type":"link"}