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Efficient Water Solenoid Valve

for a reverse-osmosis water filter

Efficient Water Solenoid Valve
The manual operation of the tap for a water filter is something that seems a suitable candidate for automation. This can avoid the unnecessary waste of a large amount of water. The circuit has been configured such that it uses very little power.
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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.

Components
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The BOM (Bill of Materials) is the technically exhaustive listing of parts and other hardware items used to produce the working and tested prototype of any Elektor Labs project. The BOM file contains deeper information than the Component List published for the same project in Elektor Magazine. If required the BOM gets updated directly by our lab engineers. As a reader, you can download the list here.
Want to learn more about our BOM list? Read the BOM list article for extra information.
Component list
Resistors
R1,R2,R3 = 330Ohm
R4,R5 = 10kOhm
Capacitors
C1,C2,C3 = 100nF
C4 = 470µF 16V radial
C5 = 100µF 25V radial
Semiconductors
D1 = LED, red, 3 mm
D2 = LED, white, 3 mm
D3 = LED, blue, 3mm
D4,D5 = 1N4007
T1 = IRL540
IC1 = PIC12F683, programmed, Elektor Store #130258-41
IC2 = 7805
Miscellaneous
K1,K2,K3 = 2-way PCB screw terminal block, 5mm pitch
S1= pushbutton
PCB # 130258-1

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