{"product_id":"led-light-10mm-yellow","title":"LED Light 10mm Yellow","description":"\u003ch2\u003eA 10mm LED, which is the point - small ones are unteachable\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eOne yellow LED, 10mm diameter, diffused.\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eStandard hobby LEDs are 3mm or 5mm. In a classroom that size is a nuisance: fiddly to hold, hard to get into a terminal, and impossible for thirty students to see from where they are sitting. At 10mm this one is the size of a pencil eraser. A child can pick it up, get the legs into a clip and watch it light without being told which way round it went.\u003c\/p\u003e\u003cp\u003eThe diffused lens matters too. A clear LED is a bright point you cannot look at; a diffused one glows evenly, so the whole class can see whether the circuit worked from across the room.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat it teaches:\u003c\/strong\u003e current flow, and the fact that a diode only lets current through one way. Turn it around and nothing happens - which is a more memorable lesson about polarity than any diagram.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eOne thing we want to be straight about.\u003c\/strong\u003e The supplier lists this LED as compatible with 5V, 9V and 12V supplies, which would normally mean a current-limiting resistor is built into the leg. They do not actually say so. If you are wiring bare circuits at 9V or 12V rather than using a kit, ask us before you order and we will confirm it with the supplier. We would rather answer that question than have a box of dead LEDs turn up in your lab.\u003c\/p\u003e","brand":"MTA Essentials","offers":[{"title":"Default Title","offer_id":53792738771307,"sku":"EVEL0210","price":1.3,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0963\/2795\/8891\/files\/el0210_led-light-1cm-yellow.webp?v=1788351410","url":"https:\/\/megaofficesupplies.com.au\/products\/led-light-10mm-yellow","provider":"Mega Office Supplies","version":"1.0","type":"link"}