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CircuitsTune"},"subtitle":{"type":"html","$t":"A birth place of electronic schematic circuit diagram"},"link":[{"rel":"http://schemas.google.com/g/2005#feed","type":"application/atom+xml","href":"https:\/\/www.circuitstune.com\/feeds\/posts\/default"},{"rel":"self","type":"application/atom+xml","href":"https:\/\/www.blogger.com\/feeds\/4092621447904023766\/posts\/default\/-\/Transistor+Circuit?alt=json-in-script\u0026max-results=6"},{"rel":"alternate","type":"text/html","href":"https:\/\/www.circuitstune.com\/search\/label\/Transistor%20Circuit"},{"rel":"hub","href":"http://pubsubhubbub.appspot.com/"}],"author":[{"name":{"$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-2182013277377030894"},"published":{"$t":"2012-12-22T13:57:00.000+06:00"},"updated":{"$t":"2012-12-25T11:25:47.303+06:00"},"category":[{"scheme":"http://www.blogger.com/atom/ns#","term":"2N825"},{"scheme":"http://www.blogger.com/atom/ns#","term":"Alarm Circuit"},{"scheme":"http://www.blogger.com/atom/ns#","term":"BC107"},{"scheme":"http://www.blogger.com/atom/ns#","term":"BC168"},{"scheme":"http://www.blogger.com/atom/ns#","term":"BC547"},{"scheme":"http://www.blogger.com/atom/ns#","term":"BC548"},{"scheme":"http://www.blogger.com/atom/ns#","term":"Car Circuit"},{"scheme":"http://www.blogger.com/atom/ns#","term":"Fun Circuit"},{"scheme":"http://www.blogger.com/atom/ns#","term":"IC555"},{"scheme":"http://www.blogger.com/atom/ns#","term":"LM555"},{"scheme":"http://www.blogger.com/atom/ns#","term":"Motorcycle Circuit"},{"scheme":"http://www.blogger.com/atom/ns#","term":"NE555"},{"scheme":"http://www.blogger.com/atom/ns#","term":"Rain Alarm Circuit"},{"scheme":"http://www.blogger.com/atom/ns#","term":"Sensor Circuit"},{"scheme":"http://www.blogger.com/atom/ns#","term":"Transistor Circuit"},{"scheme":"http://www.blogger.com/atom/ns#","term":"Water Detector"}],"title":{"type":"text","$t":"Water Sensor Circuit Diagram using IC 555"},"content":{"type":"html","$t":"\u003Cdiv dir=\"ltr\" style=\"text-align: left;\" trbidi=\"on\"\u003E\n\u003Cdiv style=\"text-align: justify;\"\u003E\nThis is a water sensor \/rain alarm circuit diagram; it can be used on motorcycle, car or other device that we want to protect from water, rain. \u003Cbr \/\u003E\nThis is a simple water sensor\/rain alarm circuit that makes an alarm when water\/rain falls on its sensor. This circuit is based on NE555\/LM555 IC and two transistors (Q1\u0026amp;Q2). For\u0026nbsp; transistor Q1- BC547 or BC107 and for Q2-\u0026nbsp; 2N825,BC548 or BC168 can be used in the circuit. This rain detector circuit can be supplied from voltage source of +9V-12V DC. The resistor 470K ohm is a POT\/Variable resistor; it is used to adjust the sensitivity of water\/rain sensor. Use a 8 ohm,0.5w-1W\u0026nbsp; speaker to hearing\u0026nbsp; better alarm. Less than 8 ohm speaker could be harmful for the IC 555.\u003C\/div\u003E\n\u003Cdiv style=\"text-align: justify;\"\u003E\n\u003Cb\u003E\u003Cbr \/\u003E\u003C\/b\u003E\u003C\/div\u003E\n\u003Cdiv style=\"text-align: justify;\"\u003E\n\u003Cb\u003ECircuit Diagram of Water Sensor\u003Ci\u003E\u003Cbr \/\u003E\u003C\/i\u003E\u003C\/b\u003E\u003C\/div\u003E\n\u003Cdiv style=\"text-align: justify;\"\u003E\n\u003Cbr \/\u003E\u003C\/div\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\/AVvXsEiLVB0eLojnVUoOXW-_Fluxc3hLhCa4VA-gbWJesaNG7ocDVnqKEIfqM9dCaIAjqAX_duuhZ25DwmSJL4yRugBa16xjTiblrENtWajLmVv2PPnYyaxI7b07aNYyLBMRaoQb9EK2j3cMpY8\/s1600\/Water-Sensor-Rain-alarm-circuit-diagram.png\" imageanchor=\"1\" style=\"margin-left: auto; margin-right: auto;\"\u003E\u003Cimg border=\"0\" src=\"https:\/\/blogger.googleusercontent.com\/img\/b\/R29vZ2xl\/AVvXsEiLVB0eLojnVUoOXW-_Fluxc3hLhCa4VA-gbWJesaNG7ocDVnqKEIfqM9dCaIAjqAX_duuhZ25DwmSJL4yRugBa16xjTiblrENtWajLmVv2PPnYyaxI7b07aNYyLBMRaoQb9EK2j3cMpY8\/s1600\/Water-Sensor-Rain-alarm-circuit-diagram.png\" \/\u003E\u003C\/a\u003E\u003C\/td\u003E\u003C\/tr\u003E\n\u003Ctr\u003E\u003Ctd class=\"tr-caption\" style=\"text-align: center;\"\u003E\u003Ci\u003EFig-1: \u003Cspan style=\"font-family: \u0026quot;Calibri\u0026quot;,\u0026quot;sans-serif\u0026quot;; font-size: 9pt; line-height: 115%;\"\u003EWater\nSensor\/Rain alarm circuit diagram\u003C\/span\u003E\u003C\/i\u003E\u003C\/td\u003E\u003C\/tr\u003E\n\u003C\/tbody\u003E\u003C\/table\u003E\n\u003Ca name='more'\u003E\u003C\/a\u003E\u003Ch4 style=\"text-align: left;\"\u003E\nWater sensor PCB layout:\u003C\/h4\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\/AVvXsEiFk5fQs0xWA67AML4GoF20Fpj6SQRE1NEdNN7viRaFix45ygWT9Qura_0Ex2KuGQnwaHSbfDNcasZi6vXKT-BMBnJFTEPprtqo_ImNTW8OEfZ_BNbRl_tieZl6jB4htUBDj1vwyenDhy8\/s1600\/Water-sensor-Rain-alarm-pcb-circuitstune.png\" imageanchor=\"1\" style=\"margin-left: auto; margin-right: auto;\"\u003E\u003Cimg border=\"0\" height=\"103\" src=\"https:\/\/blogger.googleusercontent.com\/img\/b\/R29vZ2xl\/AVvXsEiFk5fQs0xWA67AML4GoF20Fpj6SQRE1NEdNN7viRaFix45ygWT9Qura_0Ex2KuGQnwaHSbfDNcasZi6vXKT-BMBnJFTEPprtqo_ImNTW8OEfZ_BNbRl_tieZl6jB4htUBDj1vwyenDhy8\/s320\/Water-sensor-Rain-alarm-pcb-circuitstune.png\" 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-2: PCB layout of water sensor\u003C\/i\u003E\u003C\/td\u003E\u003C\/tr\u003E\n\u003C\/tbody\u003E\u003C\/table\u003E\nWe can make the water sensor as shown in the image (Fig-2) using aluminu\u003Cspan style=\"font-family: \u0026quot;Calibri\u0026quot;,\u0026quot;sans-serif\u0026quot;;\"\u003Em conductor like a naked wire \u003C\/span\u003E. Here can be used other conductor but we suggesting to use aluminum. \u003C\/div\u003E\n"},"link":[{"rel":"replies","type":"application/atom+xml","href":"https:\/\/www.circuitstune.com\/feeds\/2182013277377030894\/comments\/default","title":"Post Comments"},{"rel":"replies","type":"text/html","href":"https:\/\/www.circuitstune.com\/2012\/01\/water-sensor-rain-alarm-circuit-555.html#comment-form","title":"3 Comments"},{"rel":"edit","type":"application/atom+xml","href":"https:\/\/www.blogger.com\/feeds\/4092621447904023766\/posts\/default\/2182013277377030894"},{"rel":"self","type":"application/atom+xml","href":"https:\/\/www.blogger.com\/feeds\/4092621447904023766\/posts\/default\/2182013277377030894"},{"rel":"alternate","type":"text/html","href":"https:\/\/www.circuitstune.com\/2012\/01\/water-sensor-rain-alarm-circuit-555.html","title":"Water Sensor Circuit Diagram using IC 555"}],"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$media":"http://search.yahoo.com/mrss/","url":"https:\/\/blogger.googleusercontent.com\/img\/b\/R29vZ2xl\/AVvXsEiLVB0eLojnVUoOXW-_Fluxc3hLhCa4VA-gbWJesaNG7ocDVnqKEIfqM9dCaIAjqAX_duuhZ25DwmSJL4yRugBa16xjTiblrENtWajLmVv2PPnYyaxI7b07aNYyLBMRaoQb9EK2j3cMpY8\/s72-c\/Water-Sensor-Rain-alarm-circuit-diagram.png","height":"72","width":"72"},"thr$total":{"$t":"3"},"georss$featurename":{"$t":"Dhaka, Bangladesh"},"georss$point":{"$t":"23.709921 90.407143000000019"},"georss$box":{"$t":"23.596680000000003 90.312930500000022 23.823162 90.501355500000017"}},{"id":{"$t":"tag:blogger.com,1999:blog-4092621447904023766.post-9220278380880186276"},"published":{"$t":"2012-06-15T20:36:00.002+06:00"},"updated":{"$t":"2012-12-25T19:47:34.925+06:00"},"category":[{"scheme":"http://www.blogger.com/atom/ns#","term":"6V DC Circuit"},{"scheme":"http://www.blogger.com/atom/ns#","term":"BC547"},{"scheme":"http://www.blogger.com/atom/ns#","term":"Fun Circuits"},{"scheme":"http://www.blogger.com/atom/ns#","term":"LED"},{"scheme":"http://www.blogger.com/atom/ns#","term":"LED circuits"},{"scheme":"http://www.blogger.com/atom/ns#","term":"Sensor Circuit"},{"scheme":"http://www.blogger.com/atom/ns#","term":"Transistor Circuit"}],"title":{"type":"text","$t":"Dark detector circuit using LDR, LED"},"content":{"type":"html","$t":"\u003Cdiv dir=\"ltr\" style=\"text-align: left;\" trbidi=\"on\"\u003E\nThis is a basic dark detector\/sensor circuit diagram based on a Photo Resistor (LDR) and\u0026nbsp; few numbers of parts.\u003Cbr \/\u003E\n\u003Ch3 style=\"text-align: left;\"\u003E\n\nParts list of dark detector:\u003C\/h3\u003E\n\u003Cdiv style=\"text-align: left;\"\u003E\nR1 = 330Ω Resistor\u003Cbr \/\u003E\nR2 = 1KΩ Resistor\u003Cbr \/\u003E\nR3 = 1k Variable Resistor\u003Cbr \/\u003E\nQ1, Q2 = BC547 Transistor\u003Cbr \/\u003E\nOne Photo Resistor (LDR)\u003Cbr \/\u003E\nOne 6V DC \u003Ca href=\"http:\/\/www.circuitstune.com\/search\/label\/Power%20supply\" target=\"_blank\"\u003Epower supply\u003C\/a\u003E or Battery\u003C\/div\u003E\n\u003Ch3 style=\"text-align: left;\"\u003E\n\nCircuit diagram of dark detector\/sensor:\u003C\/h3\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\u003Cimg alt=\"dark detector circuit diagram \" border=\"0\" height=\"289\" src=\"https:\/\/blogger.googleusercontent.com\/img\/b\/R29vZ2xl\/AVvXsEhHgdKevnEF6NiNJdvVyt1xf7I-6plNaX5CreNLyAsUpqvEVEbbraFNzR7hk4z6xcMhXPHpKi3_9xZbXr32k_E0ewiRTSlMZ4mdmsD_AUd-P69dcXSaPbTcNez-C6YAzPDIUAbha_sRGQQ\/s400\/Dark-detector-circuit-diagram.png\" style=\"margin-left: auto; margin-right: auto;\" title=\"\" width=\"400\" \/\u003E\u003C\/td\u003E\u003C\/tr\u003E\n\u003Ctr\u003E\u003Ctd class=\"tr-caption\" style=\"text-align: center;\"\u003E\u003Ci\u003EFig: Circuit diagram of dark detector\/sensor\u003C\/i\u003E\u003C\/td\u003E\u003C\/tr\u003E\n\u003C\/tbody\u003E\u003C\/table\u003E\n\u003Cdiv class=\"separator\" style=\"clear: both; text-align: center;\"\u003E\n\u003C\/div\u003E\n\u003Cdiv style=\"text-align: left;\"\u003E\n\u003C\/div\u003E\n\u003Ca name='more'\u003E\u003C\/a\u003E\u003Cdiv style=\"text-align: justify;\"\u003E\nWhen the LDR (Light Depended Resistor) is in light its resistance is low, and when in dark its resistance goes higher. When the light level decreases means the LDR is in darks then LDR goes its maximum threshold resistance, then the circuit automatically switches on the LED. Here I used a 1K variable resistor as R3 to adjust the dark\/light sensitivity of the circuit.\u003C\/div\u003E\n\u003C\/div\u003E\n"},"link":[{"rel":"replies","type":"application/atom+xml","href":"https:\/\/www.circuitstune.com\/feeds\/9220278380880186276\/comments\/default","title":"Post Comments"},{"rel":"replies","type":"text/html","href":"https:\/\/www.circuitstune.com\/2012\/06\/dark-detectorsensor-circuit-using-ldr.html#comment-form","title":"1 Comments"},{"rel":"edit","type":"application/atom+xml","href":"https:\/\/www.blogger.com\/feeds\/4092621447904023766\/posts\/default\/9220278380880186276"},{"rel":"self","type":"application/atom+xml","href":"https:\/\/www.blogger.com\/feeds\/4092621447904023766\/posts\/default\/9220278380880186276"},{"rel":"alternate","type":"text/html","href":"https:\/\/www.circuitstune.com\/2012\/06\/dark-detectorsensor-circuit-using-ldr.html","title":"Dark detector circuit using LDR, LED"}],"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$media":"http://search.yahoo.com/mrss/","url":"https:\/\/blogger.googleusercontent.com\/img\/b\/R29vZ2xl\/AVvXsEhHgdKevnEF6NiNJdvVyt1xf7I-6plNaX5CreNLyAsUpqvEVEbbraFNzR7hk4z6xcMhXPHpKi3_9xZbXr32k_E0ewiRTSlMZ4mdmsD_AUd-P69dcXSaPbTcNez-C6YAzPDIUAbha_sRGQQ\/s72-c\/Dark-detector-circuit-diagram.png","height":"72","width":"72"},"thr$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"}}]}});