Simple Water Detector Circuit


Posted on Feb 4, 2014

This simple water detector circuit uses alternative voltage in order to prevent the corrosion of the electrodes. It is easy to build and uses N1 as a trigger Schmitt gate which generate the AC. If between the electrodes is a electricity conductor, for example an aqueous solution, then because of the rectification action of D1 and D2, the C4 capaci


Simple Water Detector Circuit
Click here to download the full size of the above Circuit.

tor is charging. When the capacitor voltage reaches switching threshold of the N2 trigger Schmitt, the relay will trigger and connect, for example a drain pump. The pump will be disconnected as soon as the electrodes won`t touch the liquid.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

2x30W audio amplifier (STK465)
Led indicates logic states
Build a Portable AM Radio Transmitter
Buck Boost Voltage Converter
3 volts car adapter using lt1074ct
Telephone Line Indicator Circuit
SSB
Audio Oscillators
Meteor Scatter obs with VHF Radio & Computer
DIY/Homemade Radiation Geiger Dosimeter
Rustl3rs Custom Smart LED Light
ICL8038-based Oscillator
Solder Aid
Battery discharge status indicator circuit



Top