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CircuitsTune"},"subtitle":{"type":"html","$t":"A birth place of electronic schematic circuit diagram"},"link":[{"rel":"http://schemas.google.com/g/2005#feed","type":"application/atom+xml","href":"https:\/\/www.circuitstune.com\/feeds\/posts\/default"},{"rel":"self","type":"application/atom+xml","href":"https:\/\/www.blogger.com\/feeds\/4092621447904023766\/posts\/default\/-\/LED+and+Light?alt=json-in-script\u0026max-results=6"},{"rel":"alternate","type":"text/html","href":"https:\/\/www.circuitstune.com\/search\/label\/LED%20and%20Light"},{"rel":"hub","href":"http://pubsubhubbub.appspot.com/"}],"author":[{"name":{"$t":"Unknown"},"email":{"$t":"noreply@blogger.com"},"gd$image":{"rel":"http://schemas.google.com/g/2005#thumbnail","width":"16","height":"16","src":"https:\/\/img1.blogblog.com\/img\/b16-rounded.gif"}}],"generator":{"version":"7.00","uri":"http://www.blogger.com","$t":"Blogger"},"openSearch$totalResults":{"$t":"3"},"openSearch$startIndex":{"$t":"1"},"openSearch$itemsPerPage":{"$t":"6"},"entry":[{"id":{"$t":"tag:blogger.com,1999:blog-4092621447904023766.post-3507931974622613624"},"published":{"$t":"2013-02-07T01:02:00.001+06:00"},"updated":{"$t":"2013-02-07T01:02:31.181+06:00"},"category":[{"scheme":"http://www.blogger.com/atom/ns#","term":"1N4007"},{"scheme":"http://www.blogger.com/atom/ns#","term":"Circuit"},{"scheme":"http://www.blogger.com/atom/ns#","term":"DIY"},{"scheme":"http://www.blogger.com/atom/ns#","term":"Electrical"},{"scheme":"http://www.blogger.com/atom/ns#","term":"Fluorescent"},{"scheme":"http://www.blogger.com/atom/ns#","term":"LED and Light"},{"scheme":"http://www.blogger.com/atom/ns#","term":"Project"},{"scheme":"http://www.blogger.com/atom/ns#","term":"Tube Light"},{"scheme":"http://www.blogger.com/atom/ns#","term":"Tube Light Circuit"}],"title":{"type":"text","$t":"Re-using fused tube-light by 4 diode"},"content":{"type":"html","$t":"\u003Cdiv dir=\"ltr\" style=\"text-align: left;\" trbidi=\"on\"\u003E\nA tube-light get fused due to use from a long time. You may notice that a used fluorescent tube-light get black colored on the both end of it. This circuit is to light-up those fused tube-light.\u003Cbr \/\u003EHave you think about re using a fused tube light? (Which is usually thrown out). Well here I’m showing a simple circuit using 4 diode for re-using a fused tube light. \u003Cbr \/\u003E\n\u003Cbr \/\u003E\n\u003Cdiv class=\"separator\" style=\"clear: both; text-align: center;\"\u003E\n\u003Ca href=\"https:\/\/blogger.googleusercontent.com\/img\/b\/R29vZ2xl\/AVvXsEh1EKL7dV13pMa4pUbszoaezYa1BQR1vx4VCE5THMe6dSPa5X_3fTHyhLzNJ9hlY2wAMZ3cv2ES03fH4vA6H0keRQwkrYbJY4fquVbgYax6fNmqHqsqzI11FUusaFYMTnJbDqx01uDjaFI\/s1600\/fuse-tubelight-circuit.png\" imageanchor=\"1\" style=\"margin-left: 1em; margin-right: 1em;\"\u003E\u003Cimg alt=\"use fused tube-light\" border=\"0\" src=\"https:\/\/blogger.googleusercontent.com\/img\/b\/R29vZ2xl\/AVvXsEh1EKL7dV13pMa4pUbszoaezYa1BQR1vx4VCE5THMe6dSPa5X_3fTHyhLzNJ9hlY2wAMZ3cv2ES03fH4vA6H0keRQwkrYbJY4fquVbgYax6fNmqHqsqzI11FUusaFYMTnJbDqx01uDjaFI\/s1600\/fuse-tubelight-circuit.png\" title=\"\" \/\u003E\u003C\/a\u003E\u003C\/div\u003E\n\u003Cbr \/\u003E\n\u003Cbr \/\u003E\n\u003Ca name='more'\u003E\u003C\/a\u003E\u003Cbr \/\u003E\u003Cbr \/\u003E\nThe circuit diagram shown above is quite simplified from basic \u003Ca href=\"http:\/\/www.circuitstune.com\/2012\/01\/fluorescent-light-wiring-diagram-tube-light-circuit.html\" target=\"_blank\"\u003Etube light wiring diagram\u003C\/a\u003E by adding a bridge rectifier. Bridge rectifier provides high voltage DC to the both end of tube. All we have focused in this project is to lighting-up the weak tube using high voltage DC.\u003Cbr \/\u003E\u003Cbr \/\u003E\u003Cb\u003ENote:\u003C\/b\u003E A fully damaged or broken tube-light could not be light-up anyway. Use those tube-light for this project that is still trying to light-up but not fully lightened on the \u003Ca href=\"http:\/\/www.circuitstune.com\/2012\/01\/fluorescent-light-wiring-diagram-tube-light-circuit.html\" target=\"_blank\"\u003Ebasic connection of tube-light.\u003C\/a\u003E\u003C\/div\u003E\n"},"link":[{"rel":"replies","type":"application/atom+xml","href":"https:\/\/www.circuitstune.com\/feeds\/3507931974622613624\/comments\/default","title":"Post Comments"},{"rel":"replies","type":"text/html","href":"https:\/\/www.circuitstune.com\/2013\/02\/re-using-fused-tube-light-by-4-diode.html#comment-form","title":"2 Comments"},{"rel":"edit","type":"application/atom+xml","href":"https:\/\/www.blogger.com\/feeds\/4092621447904023766\/posts\/default\/3507931974622613624"},{"rel":"self","type":"application/atom+xml","href":"https:\/\/www.blogger.com\/feeds\/4092621447904023766\/posts\/default\/3507931974622613624"},{"rel":"alternate","type":"text/html","href":"https:\/\/www.circuitstune.com\/2013\/02\/re-using-fused-tube-light-by-4-diode.html","title":"Re-using fused tube-light by 4 diode"}],"author":[{"name":{"$t":"Unknown"},"email":{"$t":"noreply@blogger.com"},"gd$image":{"rel":"http://schemas.google.com/g/2005#thumbnail","width":"16","height":"16","src":"https:\/\/img1.blogblog.com\/img\/b16-rounded.gif"}}],"media$thumbnail":{"xmlns$media":"http://search.yahoo.com/mrss/","url":"https:\/\/blogger.googleusercontent.com\/img\/b\/R29vZ2xl\/AVvXsEh1EKL7dV13pMa4pUbszoaezYa1BQR1vx4VCE5THMe6dSPa5X_3fTHyhLzNJ9hlY2wAMZ3cv2ES03fH4vA6H0keRQwkrYbJY4fquVbgYax6fNmqHqsqzI11FUusaFYMTnJbDqx01uDjaFI\/s72-c\/fuse-tubelight-circuit.png","height":"72","width":"72"},"thr$total":{"$t":"2"}},{"id":{"$t":"tag:blogger.com,1999:blog-4092621447904023766.post-5103778970987106075"},"published":{"$t":"2012-03-25T16:21:00.003+06:00"},"updated":{"$t":"2013-01-26T00:35:40.289+06:00"},"category":[{"scheme":"http://www.blogger.com/atom/ns#","term":"DB3 C312"},{"scheme":"http://www.blogger.com/atom/ns#","term":"DIAC Circuit"},{"scheme":"http://www.blogger.com/atom/ns#","term":"Fun Circuits"},{"scheme":"http://www.blogger.com/atom/ns#","term":"High voltage"},{"scheme":"http://www.blogger.com/atom/ns#","term":"LED and Light"},{"scheme":"http://www.blogger.com/atom/ns#","term":"Led Flashing"}],"title":{"type":"text","$t":"230V Led Flasher Circuit  using DIAC"},"content":{"type":"html","$t":"\u003Cdiv dir=\"ltr\" style=\"text-align: left;\" trbidi=\"on\"\u003E\n\u003Cdiv style=\"text-align: justify;\"\u003E\nThis is a very \u003Cb\u003Esimple LED flasher circuit diagram\u003C\/b\u003E that is powered from \u003Cb\u003EAC 230V\u003C\/b\u003E mains. This Flasher can be used as a \u003Cb\u003Epower indicator\u003C\/b\u003E for the AC 230V mains supply. This circuit is made with few numbers of parts namely, \u003Cb\u003Ea LED, two Resistors, one Capacitor, one Diode and one DIAC\u003C\/b\u003E.\u0026nbsp; The DIAC act the main role to flashing the LED. DIAC is a bidirectional device. It conducts current only after its breakover voltage has been reached its threshold. Most DIAC's \u003Cb\u003Ebreak-over\u003C\/b\u003E voltage is around 30 V.\u003C\/div\u003E\n\u003Ch3 style=\"text-align: left;\"\u003E\n\u003Cbr \/\u003E\u003C\/h3\u003E\n\u003Ch3 style=\"text-align: left;\"\u003E\n\u003Cb\u003E230V Mains Power Indicator LED Flasher Circuit Diagram\u003C\/b\u003E\u003C\/h3\u003E\n\u003Cbr \/\u003E\n\u003Ctable align=\"center\" cellpadding=\"0\" cellspacing=\"0\" class=\"tr-caption-container\" style=\"margin-left: auto; margin-right: auto; text-align: center;\"\u003E\u003Ctbody\u003E\n\u003Ctr\u003E\u003Ctd style=\"text-align: center;\"\u003E\u003Ca href=\"https:\/\/blogger.googleusercontent.com\/img\/b\/R29vZ2xl\/AVvXsEjWq6xKqlQmcQ0Qbm7Yq6PaYG-1ZyyrcIp7XujBR12VZczyA40IxMGJoY-XE2kjD5bj93jjQ8i0nxb1KUhvM2ZPwPkMkZb24vcnU5fDHXNPt2WJmZomfriT6082JAPmPyeJTXF6yU1mnDM\/s1600\/AC+230V+Mains+Powered+Led+Flasher+Circuit+Diagram+by+DIAC.gif\" style=\"margin-left: auto; margin-right: auto;\" target=\"_blank\"\u003E\u003Cimg alt=\"230V Led Flasher\" border=\"0\" height=\"241\" src=\"https:\/\/blogger.googleusercontent.com\/img\/b\/R29vZ2xl\/AVvXsEjWq6xKqlQmcQ0Qbm7Yq6PaYG-1ZyyrcIp7XujBR12VZczyA40IxMGJoY-XE2kjD5bj93jjQ8i0nxb1KUhvM2ZPwPkMkZb24vcnU5fDHXNPt2WJmZomfriT6082JAPmPyeJTXF6yU1mnDM\/s400\/AC+230V+Mains+Powered+Led+Flasher+Circuit+Diagram+by+DIAC.gif\" title=\"\" width=\"400\" \/\u003E\u003C\/a\u003E\u003C\/td\u003E\u003C\/tr\u003E\n\u003Ctr\u003E\u003Ctd class=\"tr-caption\" style=\"text-align: center;\"\u003EFig: Circuit Diagram of 230V Led Flasher\u003C\/td\u003E\u003C\/tr\u003E\n\u003C\/tbody\u003E\u003C\/table\u003E\n\u003Ca name='more'\u003E\u003C\/a\u003E\u003Cbr \/\u003E\nWhen mains is connect to the circuit, the Capacitor(C1) starts charging through Diode(D1) and Resistor(R1). When the voltage on the capacitor reached the DIAC’s threshold voltage, the DIAC get turn on. And LED gets Lights(flash). At the same time Capacitor(C1) goes discharges and breakover voltage of DIAC also decrease and LED turns OFF. The on off time of the LED depends on the value of Capacitor(C1)\u0026nbsp; and Resistor(R1).\u003Cbr \/\u003E\n\u003Cdiv style=\"text-align: justify;\"\u003E\nNote that the flashing time of the LED shown in the animating figure is not the exact timing of ON\/OFF.\u003C\/div\u003E\n\u003C\/div\u003E\n"},"link":[{"rel":"replies","type":"application/atom+xml","href":"https:\/\/www.circuitstune.com\/feeds\/5103778970987106075\/comments\/default","title":"Post Comments"},{"rel":"replies","type":"text/html","href":"https:\/\/www.circuitstune.com\/2012\/03\/ac-230v-mains-powered-led-flasher.html#comment-form","title":"1 Comments"},{"rel":"edit","type":"application/atom+xml","href":"https:\/\/www.blogger.com\/feeds\/4092621447904023766\/posts\/default\/5103778970987106075"},{"rel":"self","type":"application/atom+xml","href":"https:\/\/www.blogger.com\/feeds\/4092621447904023766\/posts\/default\/5103778970987106075"},{"rel":"alternate","type":"text/html","href":"https:\/\/www.circuitstune.com\/2012\/03\/ac-230v-mains-powered-led-flasher.html","title":"230V Led Flasher Circuit  using DIAC"}],"author":[{"name":{"$t":"Unknown"},"email":{"$t":"noreply@blogger.com"},"gd$image":{"rel":"http://schemas.google.com/g/2005#thumbnail","width":"16","height":"16","src":"https:\/\/img1.blogblog.com\/img\/b16-rounded.gif"}}],"media$thumbnail":{"xmlns$media":"http://search.yahoo.com/mrss/","url":"https:\/\/blogger.googleusercontent.com\/img\/b\/R29vZ2xl\/AVvXsEjWq6xKqlQmcQ0Qbm7Yq6PaYG-1ZyyrcIp7XujBR12VZczyA40IxMGJoY-XE2kjD5bj93jjQ8i0nxb1KUhvM2ZPwPkMkZb24vcnU5fDHXNPt2WJmZomfriT6082JAPmPyeJTXF6yU1mnDM\/s72-c\/AC+230V+Mains+Powered+Led+Flasher+Circuit+Diagram+by+DIAC.gif","height":"72","width":"72"},"thr$total":{"$t":"1"}},{"id":{"$t":"tag:blogger.com,1999:blog-4092621447904023766.post-8077951274467573594"},"published":{"$t":"2012-01-21T20:57:00.002+06:00"},"updated":{"$t":"2012-12-25T11:14:36.872+06:00"},"category":[{"scheme":"http://www.blogger.com/atom/ns#","term":"2N3904"},{"scheme":"http://www.blogger.com/atom/ns#","term":"Astable Multivibrator"},{"scheme":"http://www.blogger.com/atom/ns#","term":"Fun Circuit"},{"scheme":"http://www.blogger.com/atom/ns#","term":"LED and Light"},{"scheme":"http://www.blogger.com/atom/ns#","term":"Led Flashing"},{"scheme":"http://www.blogger.com/atom/ns#","term":"Transistor Circuit"}],"title":{"type":"text","$t":"Astable multivibrator-2 LED flashing circuit,2N3904,3.7V"},"content":{"type":"html","$t":"\u003Cdiv dir=\"ltr\" style=\"text-align: left;\" trbidi=\"on\"\u003E\nMany of my friends asked me for automatic on off led circuit or\u0026nbsp; led flashing circuit so here I’m going to post a Astable multivibrator-2 LED flashing circuit.\u003Cbr \/\u003E\n\u003Cbr \/\u003E\n\u003Ch3 style=\"text-align: left;\"\u003E\n\u003Cb\u003ECircuit diagram of Astable multivibrator with 2 LED:\u003C\/b\u003E\u003C\/h3\u003E\n\u003Cbr \/\u003E\n\u003Ctable align=\"center\" cellpadding=\"0\" cellspacing=\"0\" class=\"tr-caption-container\" style=\"margin-left: auto; margin-right: auto; text-align: center;\"\u003E\u003Ctbody\u003E\n\u003Ctr\u003E\u003Ctd style=\"text-align: center;\"\u003E\u003Ca href=\"https:\/\/blogger.googleusercontent.com\/img\/b\/R29vZ2xl\/AVvXsEgH8q_ZGdBCmGGaRTc-V82_YQLg0TAEtnW-NM_I9rNEP-JVzY-9sAN8bdQpRpkbXle4D8IeOUQY-9BUjraXvRLtzF10EDSB4CT5b-YSjAak9Oxn7Br4GpiQ3L2PVFiQ_xrkU2VV1Y6Z-XI\/s1600\/Astable+multivibrator-2+LED+flashing+circuit-2N3904.gif\" imageanchor=\"1\" style=\"margin-left: auto; margin-right: auto;\"\u003E\u003Cimg alt=\"Astable multivibrator circuit\" border=\"0\" src=\"https:\/\/blogger.googleusercontent.com\/img\/b\/R29vZ2xl\/AVvXsEgH8q_ZGdBCmGGaRTc-V82_YQLg0TAEtnW-NM_I9rNEP-JVzY-9sAN8bdQpRpkbXle4D8IeOUQY-9BUjraXvRLtzF10EDSB4CT5b-YSjAak9Oxn7Br4GpiQ3L2PVFiQ_xrkU2VV1Y6Z-XI\/s1600\/Astable+multivibrator-2+LED+flashing+circuit-2N3904.gif\" title=\"\" \/\u003E\u003C\/a\u003E\u003C\/td\u003E\u003C\/tr\u003E\n\u003Ctr\u003E\u003Ctd class=\"tr-caption\" style=\"text-align: center;\"\u003E\u003Ci\u003EFig:\u0026nbsp; Astable multivibrator-2 LED flashing circuit Circuit diagram\u003C\/i\u003E\u003C\/td\u003E\u003C\/tr\u003E\n\u003C\/tbody\u003E\u003C\/table\u003E\nIt is a simple astable multivibrator circuit using 2LED (here i used red LED), two NPN small transistor 2N3904 for switching. Here other small NPN transistor can be used, including\u0026nbsp; 2N4401, 2N2222 or PN2222. Supply voltage is +3.7V to +5V or if you want to supply a larger volt then add a required resistor series connected with\u0026nbsp; 2 LED’s. I recommend to use +3.7V for best result . for +3.7V you can use a battery of\u0026nbsp; mobile phone.\u003Cbr \/\u003E\n\u003Cdiv style=\"text-align: justify;\"\u003E\n\u003Ca name='more'\u003E\u003C\/a\u003E\u003Cbr \/\u003E\nThe 5K ohms resistor and the 220uF capacitor determines the LED on time(flashing) for each side. You can experiment by changing the 5K \u0026amp; 220uF value.\u003C\/div\u003E\n\u003Cbr \/\u003E\n\u003Cb\u003E\u003Cbr \/\u003E\u003C\/b\u003E\n\u003Cb\u003EPin diagram of transistor 2N3904\u003C\/b\u003E:\u003Cbr \/\u003E\n\u003Cbr \/\u003E\n\u003Ctable align=\"center\" cellpadding=\"0\" cellspacing=\"0\" class=\"tr-caption-container\" style=\"margin-left: auto; margin-right: auto; text-align: center;\"\u003E\u003Ctbody\u003E\n\u003Ctr\u003E\u003Ctd style=\"text-align: center;\"\u003E\u003Ca href=\"https:\/\/blogger.googleusercontent.com\/img\/b\/R29vZ2xl\/AVvXsEjtte_8fHEAi-LV8CqDIpO9BhlnKeC_HgM6j-Os_CimJY49fMXj3EquVDiyGRqji0Tj1E6A553WPfaSIaERtBv0_MGBPhSI05hBV3Trl4gp1KCNB5qdSyojjVPIyzhRkuCJdCcd0_B5xEU\/s1600\/Transistor-2N3904-Pin-diagram.png\" imageanchor=\"1\" style=\"margin-left: auto; margin-right: auto;\"\u003E\u003Cimg alt=\"2N3904 pinout\" border=\"0\" height=\"240\" src=\"https:\/\/blogger.googleusercontent.com\/img\/b\/R29vZ2xl\/AVvXsEjtte_8fHEAi-LV8CqDIpO9BhlnKeC_HgM6j-Os_CimJY49fMXj3EquVDiyGRqji0Tj1E6A553WPfaSIaERtBv0_MGBPhSI05hBV3Trl4gp1KCNB5qdSyojjVPIyzhRkuCJdCcd0_B5xEU\/s320\/Transistor-2N3904-Pin-diagram.png\" title=\"\" width=\"320\" \/\u003E\u003C\/a\u003E\u003C\/td\u003E\u003C\/tr\u003E\n\u003Ctr\u003E\u003Ctd class=\"tr-caption\" style=\"text-align: center;\"\u003E\u003Ci\u003EFig: 2N3904 Pin Diagram\u003C\/i\u003E\u003Cb\u003E\u003Cbr \/\u003E\u003C\/b\u003E\u003C\/td\u003E\u003C\/tr\u003E\n\u003C\/tbody\u003E\u003C\/table\u003E\n\u003C\/div\u003E\n"},"link":[{"rel":"replies","type":"application/atom+xml","href":"https:\/\/www.circuitstune.com\/feeds\/8077951274467573594\/comments\/default","title":"Post Comments"},{"rel":"replies","type":"text/html","href":"https:\/\/www.circuitstune.com\/2012\/01\/astable-multivibrator-2-led-flashing.html#comment-form","title":"6 Comments"},{"rel":"edit","type":"application/atom+xml","href":"https:\/\/www.blogger.com\/feeds\/4092621447904023766\/posts\/default\/8077951274467573594"},{"rel":"self","type":"application/atom+xml","href":"https:\/\/www.blogger.com\/feeds\/4092621447904023766\/posts\/default\/8077951274467573594"},{"rel":"alternate","type":"text/html","href":"https:\/\/www.circuitstune.com\/2012\/01\/astable-multivibrator-2-led-flashing.html","title":"Astable multivibrator-2 LED flashing circuit,2N3904,3.7V"}],"author":[{"name":{"$t":"Unknown"},"email":{"$t":"noreply@blogger.com"},"gd$image":{"rel":"http://schemas.google.com/g/2005#thumbnail","width":"16","height":"16","src":"https:\/\/img1.blogblog.com\/img\/b16-rounded.gif"}}],"media$thumbnail":{"xmlns$media":"http://search.yahoo.com/mrss/","url":"https:\/\/blogger.googleusercontent.com\/img\/b\/R29vZ2xl\/AVvXsEgH8q_ZGdBCmGGaRTc-V82_YQLg0TAEtnW-NM_I9rNEP-JVzY-9sAN8bdQpRpkbXle4D8IeOUQY-9BUjraXvRLtzF10EDSB4CT5b-YSjAak9Oxn7Br4GpiQ3L2PVFiQ_xrkU2VV1Y6Z-XI\/s72-c\/Astable+multivibrator-2+LED+flashing+circuit-2N3904.gif","height":"72","width":"72"},"thr$total":{"$t":"6"},"georss$featurename":{"$t":"Dhaka, Bangladesh"},"georss$point":{"$t":"23.709921 90.407143000000019"},"georss$box":{"$t":"23.596680000000003 90.312930500000022 23.823162 90.501355500000017"}}]}});