English
FD-M
Page 40
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Connecting the LEDs
The amplified function outputs of the decoder (AUX1 to AUX4) switch
respective to the decoder ground. For that reason you must connect
the cathode (-) of the LED to the function outputs.
When using the unamplified output (X7) connect up the LED anode (+).
As soon as the output is switched on, it is fed with 5 V.
Caution:
If you use light-emitting diodes (LEDs) you must always operate them
via a series resistor. LEDs are available in many different models. The
series resistor limits the current flow of the LED and will need to be
calculated for each model. Ask for the max. current rating when buying
your LEDs.
You can connect several LEDs in parallel to each output. In this case
every LED must have a series resistor of its own. If you connect several
LEDs to one output in series, only one series resistor is needed.
Connecting a smoothing capacitor
In track sections with bad contacts the power supply may be
interrupted shortly. You can solder a capacitor between the points X3
and X4 to conterat this effect (see fig. 1).
Fixing the decoder
After completing all connections fix the decoder with double-sided
adhesive tape, for example.
Caution:
The locomotive decoder can get warm during operation. For that
reason it should not be covered with shrinking hose or hot adhesive.
