Soil moisture detector circuits and automatic controller
Simple ideals of soil moisture detector circuit projects, can alarm with LED and buzzer, and controller as water for plants
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October 29, 2012
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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Flyback transformer tester circuit using 2SC828
The Flyback transformer tester circuit of the televisions that the result is a simple, cheap to build. so easy to use with output high volts Flyback [...]
August 26, 2012
Changing ammeter scale 1mA to 100uA
Here is the changing ammeter scale 1mA to 100uA. If you want to measure a high current on low full scale meter. How do you do? In simple way you can do.
July 4, 2012
4 Peak voltage tester circuits using op-amp and 723
If you want to check the peak voltage of the signal to change at any time. Measuring with a multimeter will not do it. We recommend this circuit. It may…
April 3, 2012
OLD digital voltmeter circuit diagram using CA3162 and CA3161
This simple digital voltmeter circuit diagram is a saving, easy to use Because it is smaller than a typical circuit, I believe that after I presented this circuit. You will…
May 5, 2011
Analog VU meter schematics
Let's use two simple Analog VU meter schematics. If we take the amplifier connected to the speakers. It is very dangerous.If your amplifier has a higher power than the limits…
May 19, 2009
Simple temperature sensor diode 1N4148
Here is temperature sensor diode 1N4148 silicon type and 741- op amp, so easy. The Output to voltmeter. You will learn why diode becomes temperature sensor.
April 28, 2007