{"product_id":"over-speed-indicator-circuit","title":"Over Speed Indicator Circuit","description":"\u003cp\u003eThis \u003cstrong\u003eOver Speed Indicator Circuit\u003c\/strong\u003e is designed for indicating over-speed and direction of rotation of the motor used in mini hand tools, water pump motors, toys, and other appliances. A 12V DC motor is coupled to the rotating part of the appliance with a suitable fixing arrangement. When the motor rotates, it develops a voltage.\u003c\/p\u003e\n\u003cp\u003eThis \u003cstrong\u003eover-speed indicator\u003c\/strong\u003e is built around operational amplifier CA3140. Set the reference voltage (depending on the desired speed) by adjusting the preset at pin 2 of IC. When the voltage developed at pin 3 of IC is higher than the reference voltage at pin 2, output pin 6 of comparator IC goes high to sound buzzer and light up. \u003cbr\u003e\u003cbr\u003e The \u003cstrong\u003erotation indicator circuit\u003c\/strong\u003e is built around AND gate 74LS08. Pin 2 of the gate goes high when the motor rotates in the forwarding direction, while pin 1 of the gate is pulled high via a resistor. When both pins 1 and 2 are high, output pin 3 of the gate goes high to light up an LED. \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 id=\"p_info\" style=\"text-align: start;\"\u003e\u003cimg alt=\"Over-Speed-Indicator-block-diagram\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0587\/2130\/4757\/files\/Over-Speed-Indicator.jpg?v=1633504841\" 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 title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/EHYAr3GCWCg\" height=\"400\" width=\"800\" 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\/6rmErwU5E-k\" height=\"400\" width=\"800\" 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\" height=\"400\" width=\"800\" 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","offer_id":40708891967669,"sku":"LGKT149","price":499.0,"currency_code":"INR","in_stock":true},{"title":"READY TO USE","offer_id":40708892000437,"sku":"LGKT149_R","price":649.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0587\/2130\/4757\/products\/over-speed-indicator-project.jpg?v=1633505158","url":"https:\/\/kitsguru.com\/es\/products\/over-speed-indicator-circuit","provider":"KitsGuru","version":"1.0","type":"link"}