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PZS-3
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 the 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
2.
Diodes
3.
Ceramic
Capacitors
4.
IC sockets
5.
Relay
6.
Transistors
Mounting orientation of no importance.
Observe the polarity!
The negative end of the diodes is marked with
a ring. This is shown in the PCB layout.
Mounting orientation of no importance.
Mount the sockets that way, the markings on
the sockets show in the same direction as the
markings on the PCB board.
The mounting orientation is given by the
layout of the pins.
Observe the polarity!
The cross section of transistors for a low
power rating in SOT-packages is shown in the
PCB layout. With transistors for a high power
rating in TO packages (e.g. BD types) the
unlabelled back side is marked in the PCB
layout by a thick line.
English
Page 21
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