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day6: build prototype

Here is the component list:

1 x trafo 12V 24VA
1 x diode bridge 2A
1 x sub-d connector 15 pins female
1 x 7805
1 x elko 1000uF
1 x LED green
2 x 74LS07
2 x 74LS76
4 x LED red
4 x resistor 1 KOhm
4 x BC547B
4 x 1n4148
4 x relais 12V 250V
4 x fuses 2A with holders






there are also some construction matrials needed like a case, screws, cables connectors enz.
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