Programmable Dial-Out BlockingDevice
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Materials
Gerber file
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Component list
R1,R3,R4 = 100k?
R2,R9 = 1k?
R5 = 270k?
R6 = 47k?
R7 = 56k?
R8 = 10k?
Capacitors:
C1,C4 = 10nF
C2,C9,C10,C16,C17 = 100nF
C3 = 4µF7 16V radial
C5-C8,C11,C14 = 10µF 63V radial
C12 = 100µF 25V radial
C13,C15 = 27pF
Inductors:
L1,L2 = 2-hole ferrite core, 2 x 2 turns ECW
Semiconductors:
D1,D4 = 1N4001
D2 = LED, green, high efficiency
D3 = LED, red, high efficiency
T1 = BC547B
IC1 = EEPROM, 24C02 or larger, in DIL8 case
IC2 = AT89C2051, programmed, order
code 020106-41
IC3 = MAX232CP
IC4 = MT8870 or KT3170
IC5 = 7805
Miscellananeous:
K1,K4 = 6-way RJ45- or RJ11 socket, PCB mount
K2 = 9-way sub-D socket (female), angled pins, PCB mount
K3 = mains adaptor socket
S1 = pushbutton, 1 make contact
X1 = 3.579545MHz (NTSC) quartz crystal (32pF parallel resonance)
Re1 = 12V relay, 2 changeover contacts, Fujitsu D012-02CP or Siemens V23042-A2003-B101
X2 = 11.0592MHz quartz crystal (32pF parallel resonance)
Re2 = NP-CL-1A181-4/4-218 (Meder/Finder/Omron) supplied by ELV (www.elv.de)
PCB, order code 020106-1
Disk, project software, order code 020106-11
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