{"product_id":"pw28-dual-power-filter-amplifier-board-25a-rectifier-diy-kit","title":"PW28 Dual Power Filter Amplifier Board 25A Rectifier DIY Kit","description":"\n\u003ch2\u003ePW28 Dual Power Filter Power Amplifier Board – 25A High-Current Rectifier DIY Kit\u003c\/h2\u003e\n\u003cp\u003eTake your DIY audio and electronics projects to the next level with the \u003cstrong\u003ePW28 Dual Power Filter Power Amplifier Board\u003c\/strong\u003e. Designed for hobbyists, engineers, and electronics enthusiasts, this high-current 25A flat bridge rectifier board delivers stable, unregulated dual-rail DC power — ideal for powering amplifiers, audio equipment, and custom electronics builds.\u003c\/p\u003e\n\n\u003cp\u003eMade in Mainland China.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-Current Capacity:\u003c\/strong\u003e Supports up to 25A continuous current, suitable for demanding amplifier and power supply applications.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual Power Rail:\u003c\/strong\u003e Provides symmetrical positive and negative DC output for balanced power amplifier circuits.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Input Voltage Range:\u003c\/strong\u003e Accepts dual AC input of AC 3–17V for flexible transformer compatibility.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFull-Wave Flat Bridge Rectifier:\u003c\/strong\u003e Efficient rectification with low ripple for cleaner DC output.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBuilt-In Filter Capacitor Section:\u003c\/strong\u003e Onboard filter stage smooths DC output, reducing noise and improving audio fidelity.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Operating Temperature:\u003c\/strong\u003e Rated from -40°C to +85°C for reliable performance in varied environments.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDIY Kit Format:\u003c\/strong\u003e Comes as a complete kit — perfect for hands-on builders who want to learn and customize.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact \u0026amp; Robust PCB:\u003c\/strong\u003e High-quality board construction for long-lasting, dependable performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e PW28\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInput Voltage:\u003c\/strong\u003e Dual AC, AC 3–17V\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMax Current:\u003c\/strong\u003e 25A\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Unregulated Dual Power Supply with Filter\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOperating Temperature:\u003c\/strong\u003e -40°C to +85°C\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage:\u003c\/strong\u003e DIY Kit (1 x Board)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCondition:\u003c\/strong\u003e New\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e Made in Mainland China\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat's in the Box?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × PW28 Dual Power Filter Amplifier Board (DIY Kit)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWho Is This For?\u003c\/h3\u003e\n\u003cp\u003eThis board is ideal for DIY audio amplifier builders, electronics students, and hobbyists looking to build a reliable dual-rail power supply for class A\/B amplifiers, preamplifiers, or other dual-supply electronic circuits.\u003c\/p\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\/hand-power-tools\" target=\"_blank\" rel=\"noopener\"\u003eOSHA guidance on hand and power tools\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What type of transformer do I need to use with the PW28 dual power filter board?\u003c\/h4\u003e\n\u003cp\u003eA: The PW28 board accepts a dual AC input voltage of AC 3–17V. You will need a center-tapped toroidal or EI transformer with a secondary winding that provides dual AC rails within this voltage range. Make sure your transformer can handle the current demand of your amplifier circuit, up to 25A maximum for this board.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Is this board suitable for powering a stereo audio amplifier?\u003c\/h4\u003e\n\u003cp\u003eA: Yes! The PW28 dual power filter amplifier board is specifically designed for audio amplifier applications. Its dual-rail output (positive and negative DC) is perfectly suited for class A, class AB, and other symmetrical amplifier designs. The onboard filter capacitor section further reduces ripple, helping to deliver cleaner power for improved audio performance.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Does this kit require soldering or assembly?\u003c\/h4\u003e\n\u003cp\u003eA: Yes, this product is supplied as a DIY kit, which means some components may require soldering and assembly. It is recommended for users with basic to intermediate electronics and soldering experience. Always follow safe electronics assembly practices when building.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What type of transformer do I need to use with the PW28 dual power filter board?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The PW28 board accepts a dual AC input voltage of AC 3–17V. You will need a center-tapped toroidal or EI transformer with a secondary winding that provides dual AC rails within this voltage range. Make sure your transformer can handle the current demand of your amplifier circuit, up to 25A maximum for this board.\"}}, {\"@type\": \"Question\", \"name\": \"Is this board suitable for powering a stereo audio amplifier?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes! The PW28 dual power filter amplifier board is specifically designed for audio amplifier applications. Its dual-rail output (positive and negative DC) is perfectly suited for class A, class AB, and other symmetrical amplifier designs. The onboard filter capacitor section further reduces ripple, helping to deliver cleaner power for improved audio performance.\"}}, {\"@type\": \"Question\", \"name\": \"Does this kit require soldering or assembly?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes, this product is supplied as a DIY kit, which means some components may require soldering and assembly. It is recommended for users with basic to intermediate electronics and soldering experience. Always follow safe electronics assembly practices when building.\"}}]}\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:\/\/n8ande-60.myshopify.com\/\"}, {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Home page\", \"item\": \"https:\/\/n8ande-60.myshopify.com\/collections\/frontpage\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"PW28 Dual Power Filter Amplifier Board 25A Rectifier DIY Kit\", \"item\": \"https:\/\/n8ande-60.myshopify.com\/products\/pw28-dual-power-filter-amplifier-board-25a-rectifier-diy-kit\"}]}\u003c\/script\u003e","brand":"Axl","offers":[{"title":"Default Title","offer_id":44167170490455,"sku":"\u003cnone\u003e","price":16.43,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0676\/6008\/7383\/files\/S04272520b12e4a72b9a656a1feed6b0aS.webp?v=1786758962","url":"https:\/\/axlcustomersupport.com\/products\/pw28-dual-power-filter-amplifier-board-25a-rectifier-diy-kit","provider":"Axl","version":"1.0","type":"link"}