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 4 digit sensor counter using mcs51-AT89C1051

Tuesday, February 19th, 2013

This is a counter circuit that I would like to you view an another form of concept. The most counter circuit that is often used in industrial applications such as object detection and counting. This project uses a sensor to detect objects that pass through, then the number increases or decreases by one and shown […]


 Digital timer controller 0-99 second using PIC16C56

Tuesday, February 19th, 2013

After we had a timer in various forms. For example : the RC circuits or using IC generat and frequency divider. This time we try to run some microcontroller IC. The advantage of it is that we can assign different effects to it, and many other applications. So we recommend take a look at this […]


 Diy fiber optic intercom

Sunday, February 17th, 2013

This project was proposed. Is basic principles of signal transmission through a fiber obtic in a simple and saves. A simple communication systems to home use. Video Door Phone Intercom is going to happen in the future. or Meetings monitor route. via the computer network with Electromagnetic wave Or transmitting visual information, audio and more. […]


 Cheap alcohol tester circuit

Thursday, February 14th, 2013

My friends who live in California, USA, said that he likes to party with friends. With alcoholic beverages. And the need to drive a car. He does not want illegal traffic and to ensure the safety of everyone, so thought to buy this alcohol tester to the car. I agree. But he wondered how, Can […]


 Dynamic Microphone Preamplifier using C945 transistor

Wednesday, February 13th, 2013

If friends are looking a somple audio amplifiers for a dynamic mic is high quality. So the low noise signal. I suggest this circuit because It use the three transistor (2SC945, or 2C1815 or 2SC828) is main Which typical transistor amplifier with a low noise this circuit, too. There are about 200-300 times the gain. […]





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