{"product_id":"electromagnetic-inductance-tester-mobile-motherboard-coil-fault-detector","title":"Electromagnetic Inductance Tester – PCB Coil Fault Detector","description":"\n\u003ch2\u003eGaqqee Electromagnetic Induction Inductance \u0026amp; Capacitance Tester\u003c\/h2\u003e\n\u003cp\u003eDiagnose faults on mobile phone motherboards faster than ever with this compact electromagnetic induction tester. Using non-contact proximity sensing, it instantly detects whether inductor coils and capacitors are functioning correctly — no specialist training required. A bright LED indicator gives you a clear pass\/fail readout in seconds, making it an essential tool for any mobile phone repair technician or electronics enthusiast.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMade in Mainland China.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eElectromagnetic Induction Detection:\u003c\/strong\u003e Proximity-sensing technology allows fast, non-contact fault diagnosis on live circuits without dismantling components.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIntuitive LED Indicator:\u003c\/strong\u003e A single LED light illuminates when an inductor is working correctly — no oscilloscope or complex readout needed.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTwo Sensitivity Settings (High \/ Low):\u003c\/strong\u003e Switch between sensitivity levels to handle both standard and miniature SMD inductors accurately, minimising false readings.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact \u0026amp; Lightweight Design:\u003c\/strong\u003e At just 75 × 15.15 × 5.8 mm and powered by a single CR 1220 button cell, it slips easily into any toolkit or pocket.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLow Power Consumption:\u003c\/strong\u003e Efficient circuitry extends battery life so the tester is always ready when you need it.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Application:\u003c\/strong\u003e Suitable for mobile phones, tablets, laptops, and other consumer electronics motherboard repair scenarios.\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\u003eTesting Method\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eElectromagnetic induction proximity sensing\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTesting Accuracy\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTwo adjustable levels: High \/ Low\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDisplay\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLED indicator\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Source\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCR 1220 button cell battery\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e75 × 15.15 × 5.8 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Consumption\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLow\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBrand new\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePackage Contents\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 × Inductance \/ Capacitance Tester\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\u003eHow to Use\u003c\/h3\u003e\n\u003col\u003e\n  \u003cli\u003eInsert the CR 1220 battery and switch the device on — the power indicator LED will illuminate. If it does not light up, check or replace the battery.\u003c\/li\u003e\n  \u003cli\u003eBring the front probe end close to the inductor coil under test. If the LED illuminates, the inductor is functioning correctly.\u003c\/li\u003e\n  \u003cli\u003eFor small or miniature SMD inductors, set the sensitivity switch to the \u003cstrong\u003eHigh\u003c\/strong\u003e setting for more precise detection.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSafety Note:\u003c\/strong\u003e This tool performs live-circuit testing. Always exercise caution to avoid accidental electric shock during use.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eExplore More Useful Tools \u0026amp; Storage\u003c\/h3\u003e\n\u003cp\u003eKeep your workspace organised with the \u003ca href=\"\/products\/airtight-transparent-pet-storage-bottle-craft-beads-home-organization\"\u003eAirtight Transparent PET Storage Bottle\u003c\/a\u003e — perfect for storing small components, screws, and spare batteries. Need a reliable leather punch for custom repair mats or cable management straps? Check out the \u003ca href=\"\/products\/leather-hole-punch-tool-diy-stitching-punch-4-5-6mm\"\u003eLeather Hole Punch Tool | DIY Stitching Punch 4\/5\/6mm\u003c\/a\u003e. For a versatile stainless steel precision tool, see the \u003ca href=\"\/products\/stainless-steel-ceramic-trimming-tool-curved-skip-knife\"\u003eStainless Steel Ceramic Trimming Tool – Curved Skip Knife\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/personal-protective-equipment\" target=\"_blank\" rel=\"noopener\"\u003eOSHA on personal protective equipment\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What types of components can this inductance tester detect?\u003c\/h4\u003e\n\u003cp\u003eA: The electromagnetic induction tester is designed primarily for detecting inductors and coils on mobile phone and computer motherboards. It works by proximity sensing — bringing the tip close to a coil generates an electromagnetic response, which triggers the LED indicator if the component is operational. It is ideal for SMD inductors, power coils, and similar inductive components found on PCBs.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Do I need to remove the component from the board to test it?\u003c\/h4\u003e\n\u003cp\u003eA: No. This tester uses non-contact electromagnetic proximity sensing, so components can be tested directly on the live motherboard without desoldering or disassembly. Simply power on the device and bring the probe tip close to the inductor — the LED will indicate the result instantly.\u003c\/p\u003e\n\n\u003ch4\u003eQ: When should I use the High sensitivity setting versus the Low sensitivity setting?\u003c\/h4\u003e\n\u003cp\u003eA: Use the \u003cstrong\u003eHigh\u003c\/strong\u003e sensitivity setting when testing very small or miniature SMD inductors, which generate a weaker electromagnetic field. The \u003cstrong\u003eLow\u003c\/strong\u003e sensitivity setting is better suited to larger standard inductors and helps prevent false positive readings in densely populated circuit areas.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What battery does the tester use and how long does it last?\u003c\/h4\u003e\n\u003cp\u003eA: The tester runs on a single CR 1220 button cell battery (included or readily available). Thanks to its low-power circuit design, the battery provides extended operational life under normal intermittent use — making it a cost-effective and always-ready diagnostic tool.\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\": \"What types of components can this inductance tester detect?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The electromagnetic induction tester is designed primarily for detecting inductors and coils on mobile phone and computer motherboards. It works by proximity sensing — bringing the tip close to a coil generates an electromagnetic response, which triggers the LED indicator if the component is operational. 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