How Power Inverters Work; If The Inverter's Fuse Blows - DieHard 28.71522 Operator's Manual

2. When the power input from the vehicle's battery exceeds 15.5 volts, high
voltage overload protection occurs.
Solution: Reduce the voltage range to between 12 volts and 14 volts.
3. The continuous load demand from the equipment or device being operated
exceeds the continuous load rating of the inverter being used.
Solution: Use a higher capacity inverter or lower rated device.
4. The case temperature becomes hot (exceeds 145°F).
Solution: Allow the inverter to cool. Do not block the cooling slots or air
flow over and through the inverter. Reduce the load on the inverter to the
continuous rated output.
RESET: To reset after shutdown occurs, remove the 12 volt plug from the accessory
outlet. Check the source of the problem and correct. Reinsert the 12 volt plug into
the accessory outlet.

8. HOW POWER INVERTERS WORK

There are two stages involved in transforming 12 volt DC (battery) power into
110 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 110 volt AC
(household voltage) using advanced MOSFET transistors in a full bridge
configuration. A "modified sine wave" waveform is generated by this conversion.

9. IF THE INVERTER'S FUSE BLOWS

Your power inverter is fitted with a fuse, which should not have to be replaced
under normal operating conditions. A blown fuse is usually caused by reverse
polarity or a short circuit within the device or equipment being operated.
If the fuse does blow:
1. Disconnect the device or equipment immediately.
2. Find the source of the problem and repair it.
3. Install a new 15 amp fuse. The fuses can be found on the end of the plug on
the inverter.
4. Do not tighten the fuse cap too tightly; finger-tight is sufficient.
IMPORTANT: Do not install a fuse higher than 15 amp, as this may damage the
inverter and any product you use with the inverter. Make sure to correct the cause
of the blown fuse before using the inverter again.
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