{"product_id":"electronic-heart","title":"Electronic Heart","description":"\u003cstrong\u003eElectronic Heart\u003c\/strong\u003e glows on and off like a human heartbeat if you use\u003cspan data-mce-fragment=\"1\"\u003e a \u003cstrong\u003eNE555 timer\u003c\/strong\u003e wired in Astable multi-vibrator mode\u003c\/span\u003e. Its frequency of oscillations is determined by the resistors and capacitors. Here the frequency is approximately 0.2 Hz. Each period lasts for just a little over 4 seconds.\u003cbr\u003e \u003cbr\u003eIn the \u003cstrong\u003eKit Electronic Heart\u003c\/strong\u003e, Capacitor (220uf) charges and discharges exponentially with time. As a result, a sawtooth waveform appears to be a ramp. Whatever be the voltage across the capacitor, it may not be utilized directly, as this will serve only to discharge\/drain the capacitor. Transistor (BC548) operating in the common-emitter mode acts as a buffer, preventing loading of the capacitor(220Uf), and thereby not affecting the frequency of operation of NE555. Its emitter is connected to the four red LEDs in parallel, via a (100E) resistor. The output at pin 6 of 555 Timer is used here as the source of a sawtooth waveform. \u003cbr\u003e\u003cbr\u003eThis \u003cstrong\u003eElectronic Board\u003c\/strong\u003e results in a gradual and smooth illumination\/dimming of the LEDs. By changing the emitter resistance (10K), you can get the maximum voltage across the LED. If the resistance value is too small, the light output of the LEDs may appear to be a clipped saw tooth. If it’s too large, the LEDs will turn off for a fraction of the period. When maintained at (100E), the LEDs appear to follow the voltage smoothly.\u003cbr\u003e\u003cbr\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 style=\"float: none;\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0587\/2130\/4757\/files\/diy-Electronic-Heart.jpg?v=1632740833\" alt=\"Electronic-Heart-block-diagram\"\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\/hgy8FLNRAIs\" 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 height=\"400\" width=\"800\" title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/6rmErwU5E-k\" frameborder=\"0\" allowfullscreen=\"\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003cdiv id=\"p_video\"\u003e\u003ciframe height=\"400\" width=\"800\" title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/Fp37DPZVdRI\" frameborder=\"0\" allowfullscreen=\"\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"KitsGuru","offers":[{"title":"DO IT YOURSELF KIT","offer_id":40708844912821,"sku":"LGKT025","price":349.0,"currency_code":"INR","in_stock":true},{"title":"READY TO USE KIT","offer_id":40708844880053,"sku":"LGKT025_R","price":499.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0587\/2130\/4757\/products\/The-Electronic-Heart.jpg?v=1632742431","url":"https:\/\/kitsguru.com\/fr\/products\/electronic-heart","provider":"KitsGuru","version":"1.0","type":"link"}