8-Channel DMX Demultiplexer
eight DMX channels = 8 x 0-10 V
Materials
Gerber file
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Component list
R1 = 220kOhm
R2, R4 = 220Ohm
R3 = 1kOhm
R5 = 390Ohm
R6, R7 = 4kOhm 7
Capacitors:
C1 = 1µ F 10V radial
C2,C3 = 33pF
C4-C7, C9,C10,C11 = 47nF
C8,C13,C14,C15,C17 = 100nF
C12,C16 = 1000µ F 25V radial
Semiconductors:
B1, B2 = B80C250 bridge rectifier (80V piv, 250mA cont.)
D1 = LED
D2 = zener diode 10V 500mW
IC1 = P80C32SFPN (40-pin DIL case, temperature range = 0-70°)
IC2 = 74F573 or 74HCT573
IC3 = 27C256 (programmed, order code 010002-21)
IC4 = DAC8800FP(Analog Devices)
IC5, IC6 = TL084
IC7 = LTC490 CN8 (Linear Technology)
IC8 = 6N137
IC9 = 7815
IC10 = 7805
IC11 = 79L05
IC12 = NMF0505S or TMA0505S
Miscellaneous:
K1, K2 = 8-way SIL pinheader
L1 = choke, 1µ H5*
S1 = 8-way DIP switch
X1 = 24MHz quartz crystal
Mains transformer, secondary 2x15V at 3VA
IEC mains appliance socket with earth connection and internal fuse, 25mA
Enclosure, size 200x80x132mm, e.g., Telet type LC270
PCB, order code 010002-1
Disk, project software, order code 010002-11
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