Scale Deposit Fighter
MINI PROJECT - a simple water softener
Published in issue 363, March 2007
Hard water is still the cause of all sorts of problems, in spite of the fact that standard tap water these days is (partially) decalcified. Scale deposits can lead to the failure of heating elements in various appliances or cause blockages in boilers, with possibly not insignificant financial consequences. Fortunately it is quite easy to do something about it!
Resistors
R1,R2 = 1kΩ
Capacitors
C1 = 220nF
C2,C4 = 47µF 25V
C3,C5,C6 = 100nF
Semiconductors
IC1 = 4049
IC2 = 78L09
Miscellaneous
K1 = 2-way PCB terminal block, lead pitch 5mm
K2 = DC adapter socket
PCB, ref. 070001-1, from ThePCBShop
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Click below to download a PDF copy of this article from Elektor magazine. Please note. In view of the complexity of international markets, Elektor cannot guarantee the availability of components for this project.
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