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• 9 •
3. Afx one or several “Ferrite Data Line Filters” to the television power cord. Ferrite
Data Line Filters can be purchased at most electronic supply stores.
4. Try grounding the inverter with an 18 AWG (minimum) wire, using as short a
length as possible.
NOTE: You may hear a “buzzing” sound being emitted from inexpensive sound
systems when operated with the inverter. This is due to ineffective lters in the
sound system’s power supply. Unfortunately, this problem can only be resolved by
purchasing a sound system with a higher quality power supply or higher quality lter.
WARNING: The inverter draws power, even when the switch is OFF.
To avoid battery drain, disconnect the inverter when not in use.
6. POWER SOURCE
Your average automobile or marine battery at full charge will provide an ample
power supply to the inverter for approximately 3 hours when the engine is off. The
actual length of time the inverter will function depends on the age and condition of
the battery and the power demand being placed by the device being operated with
the inverter.
If you decide to use the inverter while the engine is off, we recommend you turn
OFF the device plugged into the inverter and disconnect the inverter’s plug from
the 12 volt accessory outlet before starting the engine. To maintain battery power,
start the engine every 2 to 3 hours and let it run for approximately 10 minutes to
recharge the battery.
Although it is not necessary to disconnect the inverter when turning over the
engine, it may briey cease to operate as the battery voltage decreases. While
the inverter draws very low amperage when not in use, it should be unplugged to
avoid battery drain.
7. HOW POWER INVERTERS WORK
There are two stages involved in transforming 12 volt DC (battery) power into
120 volt AC (household voltage):
STAGE 1: The power inverter uses a DC to DC transformer to increase the
12 volt DC input voltage from the power source to 145 volt DC.
STAGE 2: The inverter then converts the 145 volt DC into 120 volts AC
(household voltage) using advanced MOSFET transistors in a full bridge
conguration. A modied sine wave is generated by this conversion.
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