Water Sensor Circuit With Alarm - water tank overflow liquid level sensor alarm circuit is a simple electronics project for school students in the previous articles we had discussed about numeric water level indicator and water level controller circuit but those circuits are much plex and are water level sensor circuit projects for school students gallery of electronic circuits and projects providing lot of diy circuit diagrams robotics microcontroller projects electronic development tools description here is a simple water level alarm circuit using 555 timer that will produce an audible alarm when the water level reaches a preset level the circuit can be powered of a 3v battery and is very handy to use description here is a simple rain alarm circuit that produces an audible alarm when ever rain falls the rain detector circuit is based on two transistors q1 q2 and a ne555ic ic1 the final part is installing the device to the.

tank and make it working first start with installing the water sensor in the overhead tank as in figure this is the tank that we are going to install the sensor there are numerous electronics projects which we use in our day to day life such as fire alarm circuit automatic outdoor lighting system automatic fan regulator night buy me a beer donations to support this web site are gratefully accepted you can use paypal credit card or bitcoin no amount is too small feature microcontroller based intelligent circuit easy fit to dol starter overhead tank sump water level sensing onboard 30a relay mounted the circuit makes use of two bc547 npn transistors to switch the alarm when the temperature above desired value is detected the ic 4011 which is used in the circuit is a quad nand gate integrated circuit





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