This tiny circuit comprising of a single 3 terminal IC UM66 can be built small enough to…
This circuit not only indicates the amount of water present in the overhead tank but als…
This very simple circuit just uses a couple of resistors, a capacitor and the easily ava…
This circuit gives out an alarm when its sensor is wetted by water. A 555 astable multiv…
This circuit utilising a 555 timer IC can be used as an alarm system to prevent the theft…
Most of the power supply failure indicator circuits need a separate power supply for them…
Sawtooth wave generators using opamp are very common. But the disadvantage is that it req…
This is a very simple circuit utilising a 555 timer IC to generate square wave of frequen…