tams elektronik PZS-3 Manual page 22

English
7. Rectifiers
8. Electrolytic
capacitors
9. Voltage regulator Observe the polarity!
10. Trimm-
potentiometers
11. Light emitting
diode (LED)
12. Terminal strips
13. ICs and
optocouplers in
DIL-housing
Page 22
Observe the polarity! The pin connections are
printed on the housing. The longer connecting
pin is the positive pole.
Observe the polarity! One of the two leads
(the shorter one) is marked with a minus sign.
The cross section of voltage regulators in
SOT-packages is shown in the PCB layout.
With voltage regulators in TO-packages the
unlabelled back side is marked in the PCB
layout by a thick line.
The mounting orientation is preset by the
layout of the three pins.
Observe the polarity!
With wired LEDs the longer lead is always the
anode (positive pole).
Put together the terminal strips before
mounting them.
Insert the ICs into the soldered socket.
Do not touch the ICs without first discharging
yourself by touching a radiator or other
grounded metal parts.
Do not bend the "legs" when inserting them
into the sockets. Check that the markings on
the PCB, the socket and the IC show to the
same direction.
PZS-3