Whistler 2000 WATT - Manual (Page 13)

OPERATING PRINCIPALS
23 22
OPERATION
to moisture. Do not operate the inverter if you, the
inverter, the device being operated or any other surfaces
that may come in contact with any power sources are
wet. Water and many other liquids can conduct electricity
which may lead to serious injury or death.
• HEAT. For peak efficiency, the ambient air temperature
should be between 50° and 80° F. Avoid placing the
inverter on or near heating vents, radiators or other
sources of heat. Do not place the inverter in direct sunlight.
• VENTILATION. In order to disperse the heat generated
while the inverter is in operation, keep it well ventilated.
While in use, maintain several inches of clearance around
the top and sides of the inverter.
• FUMES & GASES. Avoid using the inverter near
flammable materials. Do not place the inverter in
areas such as battery compartments, where fumes or
gases may accumulate.
For You Technical Types.
1. Basic Operating Principles:
Whistler inverters work in two stages. During the first stage,
the DC to DC converter increases the DC input voltage from
the power source (e.g. a 12 volt battery) to 145 volts DC. In
the second stage, the high voltage DC is converted to 110
volts (60 Hz AC) using advanced power MOSFET transistors
in a full bridge configuration. The result is excellent overload
capability and the capacity to operate difficult reactive loads.
The output waveform resulting from these conversions is a
"quasi-sine wave" or a "modified sine wave" as shown on
the following page.
This stepped waveform is similar to the power generated by
utilities and has a broad range of applications.
The modified sine wave produced by
your Whistler Inverter
The modified sine wave produced by your Whistler inverter
has a root mean square (RMS) voltage of 110 volts. The majority
of AC voltmeters are calibrated for RMS voltage and assume
that the measured waveform will be a pure sine wave.
Consequently, these meters will not read the RMS modified
sine wave voltage correctly and, when measuring your Whistler
inverter output, the meters will read about 20 to 30 volts too
low. To accurately measure the output voltage of your inverter,
0
115 volts RMS
145 volts peak