Using the MT-AIO with External Power
The Micro-Trak AIO was designed primarily for battery powered operation using the
internal battery pack. The Micro-Trak can be operated off an external source of DC
voltage, but care must be taken not to exceed the rated input voltage of 13.2 volts, which
will destroy the amplifier module. For automotive or aircraft operation, a regulated power
supply should be used to run the MT-AIO.
MICRO-VOLT 12
The Micro-Volt is a 12 volt regulated power supply intended for use with Micro-Trak
products. The supply measure 1 X 1 inches, and has a three terminal input/output
connector. The Micro-Volt will supply the short duration 2 Ampere pulses required by 8-
10 Watt Micro-Trak transmitters, and may be used to power any Micro-Trak from
automotive or 24 Volt aircraft power busses. The power supply should be installed on a
fused power bus. Note that the power supply uses a common ground for input and output.
In an automobile with negative ground, the center connection should be connected to
chassis ground. Unlike many power supplies, the voltage regulator tab on the Micro-Volt
is not connected to ground, so use care in your installation not to short the tab to chassis
ground. Do not install a screw through the board to fasten the tab to the board, as this
could cause a short. If required, the voltage regulator may be bent upwards and attached
to an accessory heat sink.
