Schumacher PI-400 Welding System User Manual


 
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Keep the inverter well ventilated in order to properly dis-
perse heat generated while it is in use.
While in use, make sure there are several inches of clear-
ance around the top and sides of the inverter.
Do not use the inverter near inflammable materials.
Do not place the inverter in areas such as battery com-
partments where fumes or gases may accumulate.
How Do Power Inverters Work?
There are two stages involved in transforming 12-volt DC
(or battery) power into 110V AC (household voltage):
STAGE 1: The PI-400 power inverter uses a DC to DC
transformer to increase the 12-volt DC input voltage from
the power source to 145-volts DC.
STAGE 2: The inverter then converts the 145-volts DC into
110-volts AC (household voltage) using advanced MOSFET
transistors in a full bridge configuration. A "modified sine
wave" waveform is generated by this conversion.
For Your Safety: Precautions to keep in mind before
and while using your power inverter:
Only connect the power inverter to a 12-volt battery.
Only connect the power inverter to a 12-volt battery with
the supplied 12- volt power cords. Make sure the cord
connections to the inverter are tight.
Do not modify the power cord or plug in any way.