{"product_id":"c-core-and-coil-bundle","title":"C-Core and Coil Bundle","description":"\u003ch3\u003e\u003cspan style=\"color: rgb(255, 128, 0);\"\u003e\u003cem\u003eBuild a working transformer and prove the turns ratio law yourself\u003c\/em\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003eThe C-Core and Coils Bundle lets students build a working transformer from scratch: a laminated steel C-core plus five coils of different turn counts, each with a center tap that unlocks a second and third turn value. Pair any two coils on the core, one carrying alternating current as the primary, one picking up an induced voltage as the secondary, and students see directly how the ratio of turns between two coils sets the ratio of voltages between them. It's the same principle behind every transformer in the power grid, in a phone charger, or in a doorbell.\u003c\/p\u003e\n\u003cp\u003eThe relationship is simple: Vs\/Vp = Ns\/Np. More turns on the secondary steps voltage up, fewer steps it down.\u003c\/p\u003e\n\u003cp\u003eRequires, but does not include, a low-voltage AC power source and banana plug leads to connect the coils, meter, and power source. Never connect the primary directly to a wall outlet; use only a classroom-rated low-voltage AC source.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy Teachers Love It\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eFive Coils, Ten Turn Values\u003c\/strong\u003e – Each coil's center tap unlocks a second and third turn count, so five coils give ten configurations for testing turns ratio against voltage.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eBuilt-In Activity Progression\u003c\/strong\u003e – From directly confirming Vs\/Vp = Ns\/Np, to isolating turns as a single variable, to designing a transformer that hits a target voltage, the bundle scales from a first demo to an applied design challenge.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eBuild It, Then Measure It\u003c\/strong\u003e – Students don't model a transformer's behavior on paper; they wind it, power it, and check whether the actual voltage matches the predicted turns ratio.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Arbor Scientific","offers":[{"title":"Default Title","offer_id":55841824604233,"sku":"98-6520","price":214.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0030\/6207\/1369\/files\/98-6520C-Core_CoilBundle2048x2048.jpg?v=1785244276","url":"https:\/\/www.arborsci.com\/products\/c-core-and-coil-bundle","provider":"Arbor Scientific","version":"1.0","type":"link"}