Sunday, March 28th, 2010 »
Posted By Ranjith » Total 17 Comments
ABSTRACT Here for the purpose, we have made four distinct stages for the effective implementation .The stages are described in brief as follows. In the first stage, we are constructing the transmitter circuit that transmits data and sequence bits at infrared frequency. Now the second part is to develop receiver circuit that receives infrared signals [...]
AUTOMATIC SOLAR TRACKER starts following the SUN right from dawn, throughout the day, till evening, and starts all over again from dawn next day. On cloudy weathers, it remains still and catches the SUN again as it slips out of clouds. It does all this automatically, employs cheap and inexpensive components, and is very accurate.Let [...]
Saturday, October 10th, 2009 »
Posted By Ranjith » Total 3 Comments
Introduction: Amplifier device that accepts a varying input signal and produces an output signal that varies in the same way as the input but has larger amplitude. The input signal may be a current, a voltage, a mechanical motion, or any other signal; the output signal is usually of the same nature. The most common [...]
Tuesday, August 18th, 2009 »
Posted By Tahan Prahara » Total 62 Comments
I have designed it just for fun. First I want to know how the line sensor work. I used comparator IC using LM339, two H-bridge sensor using eight transistors, FCS9013, and four transistors, FSC 9012. For the sensor you can use LED and LDR as the light receiver. I changed the LDR sensor to IR [...]
Wednesday, November 5th, 2008 »
Posted By Ranjith » Total 136 Comments
Controlling devices using switches are common. From a few decades controlling devices using remote control switches like infrared remote control switch, wireless remote control switches, light activated switches re becoming popular. But these technologies have their own limitations. Laser beams are harmful to mankind. Some technologies like IR remote control are used for short distance [...]
Tuesday, November 4th, 2008 »
Posted By Ranjith » Total 130 Comments
Abstract : To develop security system for houses and to save electric power. Scope : This project proposes the development of security system for farm houses and residential houses. In an extremely mechanized world such as today’s it is necessary to make our life better, convertible and economical. This is the purpose for which the [...]
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