Using electronic diagram below can be made a very simple water softener. This 555 timer circuit water softener is based on a theory that says that an electromagnetic field or electrical cause small crystals of calcium carbonate in water to join together, forming larger crystals.
Using a 555 timer circuit and some electronic components can be designed such a softener.
Timer 555 produces a square wave induced water pipe by two coils in one end wrapped around .
Using this electronic scheme can be made an electronic circuit that allows a sound indication for a button.The circuit is based on a 7555 integrated timer (CMOS version of the well-known ment 555) is connected as a multivibrator astabil .His output is a rectangular pulse with a frequency of 700 Hz, which is used to control a small buzzer. The circuit will oscillate be prevented if pin 4 of integrated circuit is connected to 0 V.