3 Simple AC Wattmeter circuits
If you are looking for AC power measurement. To use it just a little, which is not worth it. When we need to buy an expensive tool. Because use little…
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February 9, 2017
Include: Volt meters :: Sound level meter :: Analog vu meter :: Soil moisture meter :: Digital meter circuit diagram :: Temperature measurements :: Electronic measurement tools :: Frequency meters :: Best battery tester :: Transistor tester project
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Simple level voltage detector using LM741
This is really Simple level voltage detector circuit. I like it so much because cause me know principle about comparator circuit form. As show in Figure below, We use LM741…
January 17, 2017
Simple AC mains voltage indicator circuit with LED
We have many ways to indicates an AC line. A good way, the AC mains voltage indicator circuit with a LED. It may be the best choice. It saves and to be easy.
January 15, 2017
Electro meter circuit using 2N3819 FET
Today we try to come to see the circuit checks the static electricity is simple. OR Electro meter by FET 2N3819. It can show the electricity bill dwells to follow…
January 4, 2017
![4 LED voltage indicator circuits-[Edit]](https://www.eleccircuit.com/wp-content/uploads/2012/10/Chayapol-was-testing-the-Integrated-battery-level-indicator-with-3-level-led-300x250.jpg)
4 LED voltage indicator circuits-[Edit]
This is four circuits of LED voltage indicator are simple and easy to builds for check voltage battery and others, use as zener,transistor,LM339 and more
August 4, 2016
Battery voltage monitor circuit by LM339
The simple low voltage tester circuit using LM339,can use Battery voltage monitor for voltage sources that problems, by LED display and alarm sound.
June 20, 2016
High Temperature fire Alarm Circuit using transistors
When the temperature rise exceeds the limit, it will sound the siren rang out.
November 26, 2015