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Recent New Posts


 Plant soil moisture meter and automatic controller circuit

Monday, October 29th, 2012

I like planting trees, because trees are more useful to us. However, I always have problems with moisture content of soil,Each plant needs water is not as same. Watering or soil moisture is not good. May cause damage to our trees. With these problems, I think the electronic system to solve this problem. For example, […]


 Simple Voltage Indicator by LED and Zener diode

Monday, October 29th, 2012

In electronic instrumentation is needed.One friend of mine, once said that a good tool. Not need to be expensive. It is important to use enough. Today I will try to collect circuits Simple Voltage Indicator. by LED and Zener diode You look into the concept. Although is small circuits. But it might make circuits great […]


 Make solar aa battery charger by TL497

Saturday, October 20th, 2012

Let’s build a small battery savings. In an era of expensive energy better. In an era that energy is more expensive every day. Alternative energy is a good solution, to solve immediate problems, or renewable energy to do the work well. Solar energy is an alternative that we can use another kind. For this project, […]


 The small electronic drum by MC14046

Thursday, October 18th, 2012

In this high-tech generation, the style of music, inevitably have a profound exotic. And harmonic rhythm techniques with much more satisfied than before. Which this small electronic drum project is Instrument of this era really, It can be applied to the various sound effects and many others. How it works. Main idea, we use a […]


 Small uninterruptible power supply-UPS circuit

Saturday, October 13th, 2012

This small emergency backup battery systems circuit can be applied to many applications, when the power goes, the battery can provide backup power automatically. This power supply circuit system consists of a transformer, a bridge rectifier and an electrolytic capacitor. And there is a zener diode for controller the output power transistor(BD135 NPN) of this […]





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