User manual

tams elektronik
LKS-1 English
Transistors
Transistors are current amplifiers which convert low signals into
stronger ones. There are several types in different package forms
available. The type designation is printed on the component.
Transistors for a low power rating (e.g. BC types) have a
package in form of a half zylinder (SOT-package). The
three pins of bipolar transistors (e.g. BC types) are called
basis, emitter and collector (abbreviated with the letters B,
E, C in the circuit diagram).
PCB sockets
The widely spread 2,6 mm model railway connectors fit exactly to the
sockets. These are used for the connection to the voltage supply and to
connected modules or components.
Fig. 1:
PCB layout
Parts list
Zener diode D1 4,7 V
Diode D2 (external connection) 1N400x, x=2...7
Transistor Q1 BC547B
Resistors
R1 470 
R2 220 
PCB sockets GND, LED-, VCC
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