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Scale Deposit Fighter

MINI PROJECT - a simple water softener

Scale Deposit Fighter
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!
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Gerber file

CAM/CAD data for the PCB referred to in this article is available as a Gerber file. Elektor Members can exclusively download these files for free as part of their Membership. Gerber files allow a PCB to be produced on an appropriate device available locally, or through an online PCB manufacturing service. Elektor recommends its business partner Eurocircuits as the company of choice for its own prototypes and volume production in selected cases.

R1,R2 = 1k?
C1 = 220nF
C2,C4 = 47µF 25V
C3,C5,C6 = 100nF
IC1 = 4049
IC2 = 78L09
K1 = 2-way PCB terminal block, lead pitch 5mm
K2 = DC adapter socket
PCB, ref. 070001-1, from ThePCBShop
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