12V DC to high
voltage DC
conversion
High voltage
DC to AC
CONVERSION
AC Outlet
Appliance
12V DC
Input Fuses
English
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The DC to DC converter stage uses modern high frequency power conversion techniques that
have replaced bulky transformers found in less technologically advanced models. The inverter
uses advanced MOSFET transistors in a full bridge configuration, which ensures excellent
overload capabilities and allows the inverter to operate reactive loads such as small induction
motors.
The output waveform
The AC output waveform is known as a “modified sine wave”. It is a waveform that has
characteristics similar to the sine wave shape of standard household power. This type of
switching power is suitable for most AC load, including linear and switching power supplies used
in electronic equipment, transformers and motors.
The modified sine wave produced by the inverter has an RMS (root mean square) voltage, which
is the same as standard household power. Most AC voltmeters (analog and digital) are sensitive
to the average value of the waveform rather than the RMS value. They are calibrated for RMS
voltage under the assumption that waveform measured will be a pure sine wave. Voltmeters will
not read the RMS voltage of a modified sine wave correctly. The reading will be around 20-30
volts too low when measuring the inverters output.
