Power Source; How Power Inverters Work; Led Display - Schumacher Electric PID-760 Guide D'utilisation

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 briefly 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.

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
configuration. A modified sine wave is generated by this conversion.

LED DISPLAY

The LED display identifies the current status of the inverter.
VOLTS DC: The voltage of the vehicle's battery, Portable Power jump starter
or DC power source.
VOLTS AC: The voltage supplied to the device through the AC receptacle.
WATTS: The power or wattage supplied to the device plugged into the inverter.
An audio alarm will sound when any of the following codes display. To stop the
alarm, press the ON/OFF switch:
 – The inverter is not functional.
 – The vehicle's battery voltage is more than 15.5 volts. The inverter will
automatically restart after the voltage drops below 15.0 volts.
 – The continuous load demand from the device exceeds the inverter's
wattage output.
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