{"product_id":"digital-spot-welding-controller-board-110v-220v-40a-100a-transformer","title":"Digital Spot Welding Controller Board 110V\/220V – 40A\/100A","description":"\n\u003ch2\u003eDigital Spot Welding Machine Controller Board\u003c\/h2\u003e\n\u003cp\u003eTake full control of your DIY resistance welding projects with this precision-engineered \u003cstrong\u003eDigital Spot Welding Controller Board\u003c\/strong\u003e. Designed for makers, hobbyists, and workshop professionals, this compact controller board lets you fine-tune welding time and current with ease — delivering consistent, repeatable welds every time.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSTM8 Industrial Microcontroller:\u003c\/strong\u003e Reliable, high-performance processing at the heart of the controller for accurate timing and current regulation.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOptocoupler Isolation:\u003c\/strong\u003e Strong and weak electrical circuits are fully isolated via optocoupler, ensuring safe and stable operation.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eScrew-Free Fast Connection Terminals:\u003c\/strong\u003e Power line and foot switch connections use quick-connect terminals — no screwdriver needed, making setup faster and more reliable.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-Precision Potentiometers:\u003c\/strong\u003e Independent time and current inputs via single potentiometers ensure precise, repeatable settings.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOn-Board Status Indicators:\u003c\/strong\u003e Built-in LEDs for power, state, foot switch, and trigger — working status is always clearly visible at a glance.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eZero-Crossing Detection Circuit:\u003c\/strong\u003e Reliable zero-crossing detection ensures accurate SCR phase-shift triggering for consistent weld quality.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDigital Display Interface:\u003c\/strong\u003e Real-time readout of current time and current settings on the digital display.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Voltage Compatibility:\u003c\/strong\u003e Accepts AC 110V or 220V input, making it suitable for use across different regions and workshop setups.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInput Voltage:\u003c\/strong\u003e AC 110V \/ 220V\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutput Voltage:\u003c\/strong\u003e 9V (transformer controller board)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eModel Options:\u003c\/strong\u003e 40A \/ 100A\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTime Input Range:\u003c\/strong\u003e 1–50 cycles (1 cycle = 20ms)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCurrent Input Range:\u003c\/strong\u003e 30–99%\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Plastic (red)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eControl Method:\u003c\/strong\u003e Silicon-controlled phase-shifting triggering\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat's in the Box\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × Spot Welding Machine Controller Board\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cem\u003eMade in Mainland China.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch3\u003eYou May Also Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/48-piece-mig-welding-nozzle-tip-set-mb15-ak15-torch\"\u003e48-Pc MIG Welding Nozzle \u0026amp; Tip Set – MB15 AK15 Torch\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/10-in-1-multi-functional-bone-wrench-hex-socket-spanner-portable-repair-hand-tool-for-bicycle-motorcycle-furniture-assembly\"\u003e10 in 1 Multi Functional Bone Wrench Hex Socket Spanner – Portable Repair Hand Tool\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/a01f-df-6-electric-enameled-copper-wire-stripping-machine\"\u003eA01F-DF-6 Handheld Electric Enameled Copper Wire Stripper 110V\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: Is this spot welding controller board compatible with both 110V and 220V power supplies?\u003c\/h4\u003e\n\u003cp\u003eA: Yes, this digital spot welding controller board is designed to work with both AC 110V and AC 220V input voltages, making it suitable for workshops in North America, Europe, and other regions worldwide.\u003c\/p\u003e\n\u003ch4\u003eQ: What does the time input range of 1–50 cycles mean for welding?\u003c\/h4\u003e\n\u003cp\u003eA: Each cycle equals 20 milliseconds, so the time input range of 1–50 cycles gives you a welding pulse duration of 20ms up to 1 second. This precise control over weld duration helps you achieve the right bond strength for different materials and thicknesses.\u003c\/p\u003e\n\u003ch4\u003eQ: What is the difference between the 40A and 100A models?\u003c\/h4\u003e\n\u003cp\u003eA: The 40A model is suited for lighter DIY resistance welding tasks and thinner materials, while the 100A model provides higher current capacity for more demanding applications or thicker workpieces. Choose based on the scale of your welding projects.\u003c\/p\u003e\n\u003ch4\u003eQ: Does this board include a foot switch?\u003c\/h4\u003e\n\u003cp\u003eA: The controller board includes a foot switch connection terminal (screw-free, fast-connect type), but a foot switch is not included in the package. Only the controller board itself is included.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo 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.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Is this spot welding controller board compatible with both 110V and 220V power supplies?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes, this digital spot welding controller board is designed to work with both AC 110V and AC 220V input voltages, making it suitable for workshops in North America, Europe, and other regions worldwide.\"}}, {\"@type\": \"Question\", \"name\": \"What does the time input range of 1–50 cycles mean for welding?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Each cycle equals 20 milliseconds, so the time input range of 1–50 cycles gives you a welding pulse duration of 20ms up to 1 second. 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