tams elektronik S88-2 Manual page 9

tams elektronik
Ceramic capacitors
Among other things ceramic capacitors are used for filtering interference voltages
or as frequency determining parts. Ceramic capacitors are not polarized.
Normally they are marked with a three-digit number which indicates the value
coded. The number 104 corresponds to the value 100 nF.
Electrolytic capacitors
Electrolytic capacitors are often used to store energy. In contrast to ceramic
capacitors they are polarized. The value is given on the package.
Electrolytic capacitors are available with different voltage sustaining capabilities.
Using an electrolytic capacitor with a voltage sustaining capability higher than
required is always possible.
Diodes and Zener diodes
Diodes allow the current to pass through in one direction only (forward direction),
simultaneously the voltage is reduced by 0,3 to 0,8 V. Exceeding of the limit
voltage always will destroy the diode, and allow current to flow in the reverse
direction.
Zener diodes are used for limiting voltages. In contrast to "normal" diodes they
are not destroyed when the limit voltage is exceeded.
The diode type is printed on the package.
Rectifiers
Rectifiers convert alternating into direct voltage. They have four pins: two for the
input voltage (a.c. voltage) and two for the output voltage (d.c. voltage). The
pins for the output voltage are polarized.
Integrated circuits (ICs)
Depending on the type, ICs fulfil various tasks. The most common housing form is
the so-called "DIL"-housing, from which 4, 6, 8, 14, 16, 18 or more "legs" (pins)
are arranged along the long sides.
ICs are sensitive to damage during soldering (heat, electrostatic charging). For
that reason in the place of the ICs IC sockets are soldered in, in which the ICs are
inserted later.
Voltage regulators
Voltage regulators are ICs, which convert a variable, non regulated input voltage
in a constant output voltage. They are produced in transistor packages with three
connecting pins for input, output and earth.
The package forms of voltage regulators depend on their type. In use are voltage
regulators in SOT packages (half cylinder shaped) and in flat TO packages.
S88-2
Assembling the kit | 9