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/diy/ - Do It Yourself

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>> No.1663437 [View]
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1663437

>>1663249
I breadboarded the circuit and it seems to work well. First time using this type of IC (decoder/demultiplexer).
I used a ULN2003 for driving the leds and 11*1N4148 for diode-OR'ing its control inputs. The circuit drives the signals of Finnish railway main & distant signals (https://en.wikipedia.org/wiki/Finnish_railway_signalling).).

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