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Mains Indicator

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Mains Indicator
A solution using two diodes followed by a 4 times voltage multiplier in the form of a cascode rectifier.
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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.

Capacitors
C1-C4 = 220uF 6.3V
Semiconductors
D1,D2 = 1N5401
D3-D6 = BAT85
D7 = LED, low current
Miscellaneous
K1 = 2-way PCB terminal block, lead pitch 5mm
PCB, ref. 044029-1 from the PCBShop
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