{"product_id":"digital-thermometer","title":"Digital Thermometer","description":"\u003cp\u003eThe \u003cstrong\u003eDigital Thermometer\u003c\/strong\u003e is a device that uses a variety of different principles to measure temperature or temperature gradient. Thermometers have two important elements: a temperature sensor, where a certain physical change occurs with temperature, as well as some methods of converting this physical change into numerical values like the scale of a mercury thermometer.\u003cbr\u003e\u003cbr\u003eIn this\u003cstrong\u003e Digital Thermometer DIY kit,\u003c\/strong\u003e one can measure temperatures up to 150C with an accuracy of +_1C. We are using operational amplifier \u003cstrong\u003eOp-amp IC 741\u003c\/strong\u003e which provides a constant flow of current through the base-emitter junction of NPN transistor BC107 named Q. In the BC107 the voltage across the base-emitter junction of the transistor is proportional to its temperature. The transistor used this way makes a low-cost sensor.\u003c\/p\u003e\n\u003cp\u003eYou can use a silicon diode instead of a transistor. The  Science Kits small variation in voltage across the base-emitter junction is amplified by a second operational amplifier before the temperature is displayed on the meter. \u003cspan data-mce-fragment=\"1\"\u003e\u003cstrong\u003eDIY Kit Digital Thermometer\u003c\/strong\u003e p\u003c\/span\u003ereset is used to set the zero-reading on the meter and preset PR2 is used to set the range of temperature measurement. The IC7660 performs supply voltage conversions from positive to negative. The entire circuit works off a 5V.\u003cbr\u003e \u003cbr\u003e\u003c\/p\u003e\n\u003cdiv class=\"product_info\"\u003e\n\u003ch3 class=\"sing--sub-heading\"\u003eBlock Diagram\u003c\/h3\u003e\n\u003cdiv style=\"text-align: start;\" id=\"p_info\"\u003e\u003cimg src=\"https:\/\/i.postimg.cc\/BbXCd5zB\/LGKT005.jpg\" alt=\"Digital thermometer circuit using IC 741\" border=\"0\" style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product_info\"\u003e\n\u003ch3 class=\"sing--sub-heading\"\u003ePhysical Attributes\u003c\/h3\u003e\n\u003cdiv id=\"p_info\"\u003e\n\u003cul class=\"pro-ds\"\u003e\n\u003cli\u003eDimensions (cm) L x W x H : 20 x 15 x 5\u003c\/li\u003e\n\u003cli\u003eWeight (gm): 200\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product_info\"\u003e\n\u003ch3 class=\"sing--sub-heading\"\u003eProduct Video\u003c\/h3\u003e\n\u003cdiv id=\"p_video\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/Ra_GayH_Y2U\" title=\"YouTube video player\" width=\"800\" height=\"400\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen=\"\" frameborder=\"0\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003cdiv id=\"p_video\"\u003e\u003ciframe title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/6rmErwU5E-k\" width=\"800\" height=\"400\" allowfullscreen=\"\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" frameborder=\"0\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003cdiv id=\"p_video\"\u003e\u003ciframe title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/Fp37DPZVdRI\" width=\"800\" height=\"400\" allowfullscreen=\"\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" frameborder=\"0\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"KitsGuru","offers":[{"title":"DO IT YOURSELF KIT","offer_id":40708843208885,"sku":"LGKT005","price":449.0,"currency_code":"INR","in_stock":true},{"title":"READY TO USE KIT","offer_id":40708843274421,"sku":"LGKT005_R","price":649.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0587\/2130\/4757\/products\/educational-diy-kits.jpg?v=1632486087","url":"https:\/\/kitsguru.com\/es\/products\/digital-thermometer","provider":"KitsGuru","version":"1.0","type":"link"}