How Do Power Inverters Work; Led Indicators And Shutdown Protection - Schumacher Electric PI-1000 Manual Del Propietário

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.
10.

HOW DO 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 trans-
former 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" waveform is generated by this
conversion.
11. LED INDICATORS AND SHUTDOWN
PROTECTION
The GREEN LED lights automatically when plugged into
a 12-volt DC source and turned on. The RED LED lights,
an audible alarm sounds, and the inverter automatically
turns itself off under the following conditions:
1. When the power input from the vehicle's battery
drops to approximately 10-volts, low battery shutdown
occurs. (When the power input drops to 10.5-volts,
an alarm will sound for an extended period). Solution:
Recharge or Replace the battery.
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