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Construction
CONSTRUCTION
The unit consists of one main PCB with all the components including transformer
and power supply.
Tip: The pictures on the packaging can be used as a guideline.
However, due to possible modifications they are not 100% reliable.
Mount the components in the order described:
1. Jump wire
J1
J2
J3
J4
J5
J6
J7
J8
2. Diodes (check the polarity)
C A T H O D E
D1: 1N4148
D2: 1N4148
D3: 1N4148
D4: 1N4148
3. Zener diode (check the polarity)
CATHODE
ZD1: 20V / 1.3W
(Mount 5mm above the PCB)
6
D ...
D5: 1N4148
D6: 1N4148
D7: 1N4148
D8: 1N4148
ZD...
4. Resistors (check the color code)
R...
R1
: 1K
R2
: 1K
R3
: 15K
R4
: 1K
R5
: 470R
R6
: 100R
R7
: 15K
R8
: 15K
R9
: 15K
R10 : 15K
R11 : 470R
R12 : 15K
R13 : 15K
R14 : 100R
R15 : 15K
R16 : 2K2 0.6W
R17 : 100R
R18 : 1K
R19 : 470R
R20 : 2K2 0.6W
R21 : 1M
R22 : 470R
R23 : 1K
R24 : 470K
R25 : 470K
R26 : 470K
R27 : 100K
(1 - 0 - 2)
(1 - 0 - 2)
(1 - 5 - 3)
(1 - 0 - 2)
(4 - 7 - 1)
(1 - 0 - 1)
(1 - 5 - 3)
(1 - 5 - 3)
(1 - 5 - 3)
(1 - 5 - 3)
(4 - 7 - 1)
(1 - 5 - 3)
(1 - 5 - 3)
(1 - 0 - 1)
(1 - 5 - 3)
(2 - 2 - 2 - 9)
(1 - 0 - 1)
(1 - 0 - 2)
(4 - 7 - 1)
(2 - 2 - 2 - 9)
(1 - 0 - 5)
(4 - 7 - 1)
(1 - 0 - 2)
(4 - 7 - 4)
(4 - 7 - 4)
(4 - 7 - 4)
(1 - 0 - 4)
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