http://justtechnika.com Your Tech Guru. Mon, 28 May 2012 11:09:45 +0000 en hourly 1 http://wordpress.org/?v=3.1.3 http://justtechnika.com/articles/battery-charger-circuit-diagram-without-using-transformer/ http://justtechnika.com/articles/battery-charger-circuit-diagram-without-using-transformer/#comments Tue, 08 Feb 2011 13:56:24 +0000 admin http://justtechnika.com/?p=766 Make your own battery charger circuit. Battery charger circuit diagram which doesn't uses any transformer. ]]> http://justtechnika.com/articles/battery-charger-circuit-diagram-without-using-transformer/feed/ 0 http://justtechnika.com/articles/electronic-mosquito-repellent-circuit-diagram/ http://justtechnika.com/articles/electronic-mosquito-repellent-circuit-diagram/#comments Thu, 09 Dec 2010 12:53:21 +0000 admin http://justtechnika.com/?p=629 Here is a mosquito repellent electronic project with circuit diagram. This circuit uses a Timer IC 555 and few resistors, capacitors. You can build this circuit in a very less cost and this circuit keeps mosquito and insects away from you. ]]> http://justtechnika.com/articles/electronic-mosquito-repellent-circuit-diagram/feed/ 0 http://justtechnika.com/articles/circuit-diagram-simple-digital-am-transmitter/ http://justtechnika.com/articles/circuit-diagram-simple-digital-am-transmitter/#comments Sat, 30 Oct 2010 06:00:05 +0000 admin http://justtechnika.com/?p=526 Here is a very simple AM transmitter, anything spoken in front of the mic. Can be listened Medium Wave radio receiver within the range of few meters. This circuit is very as it contains only One IC , Two Resisters , Two capacitors and a Mic. And can be built by any new electronics hobbyist with expense of just a few dollars. Continue Reading to find more. ]]> http://justtechnika.com/articles/circuit-diagram-simple-digital-am-transmitter/feed/ 0 http://justtechnika.com/articles/a-simple-circuit-to-recharge-your-non-rechargeable-batteries/ http://justtechnika.com/articles/a-simple-circuit-to-recharge-your-non-rechargeable-batteries/#comments Sun, 03 Jan 2010 05:13:03 +0000 admin http://justtechnika.com/?p=230 Do you want to recharge your non-rechargeable batteries? Most of us think that non-rechargeable batteries are only for once use. But it also can be use multiple times (2-10 times depending on quality and type of battery) after recharging them. Here is a simple circuit which you can build and recharge your non rechargeable batteries. ]]> http://justtechnika.com/articles/a-simple-circuit-to-recharge-your-non-rechargeable-batteries/feed/ 1 http://justtechnika.com/articles/increase-the-range-of-your-remote-control-system-to-infinity-by-using-mobile-phone/ http://justtechnika.com/articles/increase-the-range-of-your-remote-control-system-to-infinity-by-using-mobile-phone/#comments Fri, 18 Dec 2009 06:07:12 +0000 admin http://justtechnika.com/?p=165 Remote control is a great marvel of modern world. Controlling some thing remotely sounds great. But remote control systems have many limitations one of the limitation is the distance range of the remote control usually most of the remote control systems used in home have range of only 10 – 1000 meter. Here is a trick to increase your remote control range to 1000s of kilometers by using your mobile phone. ]]> http://justtechnika.com/articles/increase-the-range-of-your-remote-control-system-to-infinity-by-using-mobile-phone/feed/ 4 http://justtechnika.com/articles/simple-clap-switch/ http://justtechnika.com/articles/simple-clap-switch/#comments Tue, 22 Sep 2009 11:39:59 +0000 admin http://justtechnika.com/?p=16 Mostly Clap switch are very complex most clap switch use at least one IC or at least 7-8 transistors. So making clap switch for an inexperienced electronics hobbyist is almost impossible. But I am here to help you with the solution. The circuit given here contains just 3 transistors. Most probably this is the simplest(using very less components) clap switch in world. ]]> http://justtechnika.com/articles/simple-clap-switch/feed/ 29