Whistler inverters work in two stages. During the first stage, the
DC to DC converter increases the DC input voltage from the power
source (e.g. a 12 volt battery) to 145 volts DC. In the second stage,
the high voltage DC is converted to 115 volts (60 Hz AC) using
advanced power MOSFET transistors in a full bridge configuration.
The result is excellent overload capability and the capacity to
operate difficult reactive loads. The output waveform resulting from
these conversions is a “quasi-sine wave” or a “modified sine wave”
as shown below:
This stepped waveform is similar to the power generated by utilities
and has a broad range of applications.
The modified sine wave produced by the inverter
The modified sine wave produced by your Whistler inverter has a
root mean square (RMS) voltage of 115 volts. The majority of AC
voltmeters measure RMS voltage and assume that the measured
waveform will be a pure sine wave.
OPERATING PRINCIPLES
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