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STD DCC Track Occupancy decoder / GBM (Gleis Besetzt Meldung)

DCC Track Occupancy decoder / GBM (Gleis Besetzt Meldung)

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CC-BY 3.0

License: CC-BY 3.0

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Update time: 2024-01-02 15:42:46
Creation time: 2020-06-14 13:19:48
Description

Description

Decoder for the DCC system to detect if tracks are occupied. Detection is performed by measuring voltage over a resistor / (high speed) diode. Feedback to the master station uses the RS-Bus. Note that there are SMD variants of this board as well.
Design Drawing

Design Drawing

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ID Name Designator Footprint Quantity
1 ATMEGA-8535PDIL40WITHSOCKET IC1 DIL40WITHSOCKET 1
2 11.0592 Q1 QS 1
3 18p C1,C2 C2.5-2 2
4 100NF C3,C4,C5,C9,C10,C11,C12 C025-025X050 7
5 10microH L1 0309/11 1
6 10K R1,R3 0207/10 2
7 1k5 R2 0207/10 1
8 1N4148 D1,D2,D3,D4,D5 DO35-7 5
9 6N136 OK1 DIL08 1
10 470microF / 40V C7 E5-10,5 1
11 100 microF / 10V C8 E2,5-7 1
12 7805TV IC2 TO220V 1
13 0,5A F1 TE5 1
14 DIL28 CON-FEEDBACK 28P 1
15 MOUNT-HOLE3.5 H2,H3,H4,H5,H6,H1 3,5 6
16 Taster S1 TASTER 1
17 PC817 OK2 DIL04 1
18 BC557 Q2 TO92 1
19 100 R4,R7,R9,R11,R14,R16,R18,R20,R22 0207/10 9
20 1K R5,R8,R10,R12,R15,R17,R19,R21,R23 0207/10 9
21 3mm LED LED1 LED3MM 1
22 1K5 R6 0207/10 1
23 EGP30A D6,D7,D8,D9,D10,D11,D13,D14,D15,D16,D17,D18,D19,D20,D21,D22 DO201-15 16
24 SRP100D D12 DO41-10 1
25 J PAD1 3,81/1,1 1
26 STL950/2 X1,X2,X3,X4,X9,X10,X11,X12,X13,X14 STL(Z)-950-2-V 10
27 STL1550/2 X5,X6 STL-1550-2-V 2
28 16PIN-CON X7 PAK100/2500-16 1

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