Digi-Switch
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The current handling capacity of the Digi-Switch stated in the Specification (2 - 3A) does
not relate to the switching capacity of the Digi-Switch, but to the capacity of the regulator
when cooled with good efficiency. To ensure that the unit is cooled effectively, and is there-
fore able to provide its full performance, we have attached a heat-sink to the outside of the
Digi-Switch. The switch is normally installed in the outside wall of the model, and the heat-
sink is therefore constantly subjected to a flow of air when the model is in flight. The silver-
colored internal heat-sink is soldered to the regulator circuit board for maximum heat trans-
fer. The heat-sink is mounted in a recess in the housing which ensures that it is not covered
completely even if the switch is installed imperfectly. In electronic terms, the Digi-Switch
regulator and associated components are designed for up to 12 A (according to manufac-
turers’ specifications).
If the heat-sink of the Digi-Switch should become very hot in use (above 60°C), you can
assume that the servos installed in the model are consuming a disproportionate amount of
energy. The first remedy should be to install the Digi-Switch in a different position in the
model (fuselage side, not concealed inside the fuselage), where it is subject to a better coo-
ling airflow. If this is not sufficient, you should consider installing our PowerBox Sensor,
which is designed to cope with higher currents.
If the maximum regulator capacity is inadequate for your system, or if the battery voltage
falls below the regulator voltage, the Digi-Switch will not switch on!
If you leave the Digi-Switch connected to the LiPo battery when it is switched off, then the
unit goes into “stand-by” mode. The idle current in this state is around 5.0 µA, which is
lower than the battery’s natural rate of self-discharge. Even so, we recommend that you
disconnect the LiPo battery from the switch if you know the model will not be used for a
long period.
Please don’t just throw away the inner packaging, as it is designed to be used as a tem-
plate for marking the switch aperture on the model. Cut the opening using a knife or saw,
working slightly outside the marked line (see photo).
