Velleman 8020 User Manual download pdf (Page 6)

The unit consists out of two PCB’s, one is the main PCB, P8020B and the other

is the left channel input section P8021L.

First we will start with the small P8021L, then we assemble the P8021B.

FTip: The pictures on the packaging can be

used as a guideline.

However, due to possible changes it is not

100% reliable.

CONSTRUCTION

q D1: 1N4148

q D2: 1N4148

q D3: 1N4148

q D4: 1N4148

q D5: 1N4148

q D6: 1N4148

1. Diodes (check the polarity)

CATHODE

D...

q R1: 10K (1-0-3)

q R2: 10K (1-0-3)

q R3: 10K (1-0-3)

q R4: 10K (1-0-3)

q R5: 10K 1-0-3)

q R6: 10K (1-0-3)

q R7: 1K (1-0-2)

q R8: 1K (1-0-2)

2. Resistors (check the color code)

R...

Construction

P8021L

1 2 3 4 5 6 7 8 9 10 11 ... 27 28

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Velleman 8020 User Manual Page 6