{"product_id":"automatic-two-phase-changer-over","title":"Automatic Two Phase Changer Over","description":"\u003cstrong\u003eAutomatic Two-Phase Changer Over\u003c\/strong\u003e is user-friendly and easy to use. It saves time too. This project is also a prototype for the automation of the system. In the earlier days (even today at some places) the manual operations are frequent. When phase 1 goes off the person manually turns on phase 2. In the case of the electrical appliance control using automation causes more safety. This kit is a prototype for the same which is auto change over to phase2 when main phase 1 fails. In this kit, we are designing a circuit to control this. In case there are two phases, then the switching will be in the default phase.\u003cbr\u003e\u003cbr\u003eThe \u003cstrong\u003eAutomatic Two-Phase Changer Over Circuit\u003c\/strong\u003e is built around a transformer, capacitors, regulators, gate IC, and relay. Two identical sets of this circuit, one each for two phases, are used. The mains power supply phase 1 is stepped down by transformer to deliver 12V, 300 mA, which is rectified by a bridge rectifier and filtered by the capacitor to produce 12V DC regulated to 5V using 7805.\u003cbr\u003e\u003cbr\u003e\n\u003cul\u003e\n\u003cli\u003eA similar process is done with phase 2 to get 5V. Proper logic is implemented using the gates IC7404 (NOT) and IC7408 (AND) so that only one phase is activated when both the phases are available.\u003c\/li\u003e\n\u003cli\u003eif any of the phases go off the available phase is activated.\u003c\/li\u003e\n\u003cli\u003eThe output from the gate logic is fed to the ULN2803 IC relay driver to put on\/off the phase supply (activation and de-activation.)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cbr\u003e\u003cbr\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 : 28 x 24 x 8\u003c\/li\u003e\n\u003cli\u003eWeight (gm): 1000\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 data-sanitized-allowfullscreen=\"\" data-sanitized-allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" data-sanitized-frameborder=\"0\" title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/Mu84ed49p2M\" height=\"400\" width=\"800\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003cdiv id=\"p_video\"\u003e\u003ciframe data-sanitized-allowfullscreen=\"\" data-sanitized-allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" data-sanitized-frameborder=\"0\" title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/6rmErwU5E-k\" height=\"400\" width=\"800\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003cdiv id=\"p_video\"\u003e\u003ciframe data-sanitized-allowfullscreen=\"\" data-sanitized-allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" data-sanitized-frameborder=\"0\" title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/Fp37DPZVdRI\" height=\"400\" width=\"800\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"KitsGuru","offers":[{"title":"DO IT YOURSELF","offer_id":40708854939829,"sku":"LGEE014","price":2199.0,"currency_code":"INR","in_stock":true},{"title":"READY TO USE","offer_id":40708854907061,"sku":"LGEE014_R","price":2999.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0587\/2130\/4757\/products\/AutomaticTwoPhageChangerOver.jpg?v=1634729201","url":"https:\/\/kitsguru.com\/fr\/products\/automatic-two-phase-changer-over","provider":"KitsGuru","version":"1.0","type":"link"}