User manual

tams elektronik
!
WBA-1 | WBA-2 | WBA-3 English
Assembly
Proceed according to the order given in the list below. First solder the
components on the solder side of the PCB and then cut the excess
wires with a side cutter. Follow the instructions on soldering in
section 3.
Caution: Several components have to be mounted according to
their polarity. When soldering these components the wrong way
round, they can be damaged when you connect the power. In the
worst case the whole circuit can be damaged. At the best, a wrongly
connected part will not function.
1. Resistors Mounting orientation of no importance.
2. Diodes Observe the polarity!
The negative end of the diodes is marked with
a ring. This is shown in the PCB layout.
3. PCB sockets
4. Transistors Observe the polarity!
The cross section of transistors for a low
power rating in SOT-packages is shown in the
PCB layout.
5. Electrolytic
capacitors
Observe the polarity!
One of the two leads (the shorter one) is
marked with a minus sign.
6. Trimm-
potentiometers
(WBA-3 only)
The mounting orientation is preset by the
layout of the three pins.
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