REV.06‐09
z Avoid placing the inverter on or near heating vents, radiators or other sources of heat. Do
not leave the inverter in the passenger compartment of your vehicle. Store in a cool dry
place. Do not place the inverter in direct sunlight. Ideal air temperature should be between
50°F and 80°F.
z In order to properly disperse 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.
z Do not use the inverter near flammable materials. Do not place the inverter in areas such as
battery compartments where fumes or gases may accumulate.
How Power Inverters Work.
There are two stages in which a power inverter changes the 12-volt DC (or battery) power into
110V AC (household current).
STAGE 1:
The inverter uses a DC-to-DC converter to increase the DC input voltage from the power source
to 145 volts DC.
STAGE 2:
The inverter then converts the high voltage DC into 110V AC (household current), using
advanced MOSFET (Metal-Oxide-Semiconductor Field effect Transistor) transistors in a full
bridge configuration. This design provides all our inverters with the capability to start and run
difficult reactive loads, while providing excellent overload capability The waveform that is
generated by this conversion is a "modified sine wave" as shown in the diagram below.
The modified sine wave produced by our inverters 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 the inverter output, the meters will read about 20 to 30 volts too low. To
accurately measure of the output voltage of the inverter, use a true RMS reading voltmeter such
as a Fluke 87 Fluke 8060A Beckman 4410, Triplet 4200 or any multimeter identified as "True
RMS"
In Review.
z Never attempt to operate the inverter from any power source other than a 12-volt DC volt
battery.
z Always disconnect the inverter when not in use.
