How Your Inverter Works; Principal Of Operation; The Maxx 750 Output Waveform - Vector VEC043 Owner's Manual

FIGURE 2 - Shows location of the cooling fan and DC terminals
(–) DC POWER CONNECTION
3. HOW YOUR VECTOR INVERTER WORKS
The inverter converts low voltage DC (direct current) from a battery or other power
source to standard 110 volt AC (alternating current) household power.
3.1 PRINCIPLE OF OPERATION
The inverter converts power in two stages. The first stage is a DC-to-DC conver-
sion process that raises the low voltage DC at the inverter input to 145 volts DC.
The second stage is the actual inverter stage that converts the high voltage DC into
110 volts, 60 Hz AC.
The DC-to-DC converter stage uses modern high frequency power conversion
techniques that have replaced the bulky transformers found in less technological-
ly-advanced models. The inverter stage uses advanced power MOSFET transistors
in a full bridge configuration. This ensures excellent overload capability and the
ability to operate reactive loads like small induction motors.
FIGURE 3 - Principle of Operation
12VDC
Input
3.2 THE MAXX 750SST OUTPUT WAVEFORM
The AC output waveform of the MAXX 750 SST is known as "modified sine wave".
It is a waveform that has characteristics similar to the sine wave shape of utility
power. This type of waveform is suitable for most AC loads, including linear and
switching power supplies used in electronic equipment, transformers, and motors.
HIGH SPEED COOLING FAN
12VDC TO
145VDC
CONVERSION
Internal
Fuses
145VDC TO
110VAC
CONVERSION
Two AC 110 VAC, 60Hz
Outlets To AC Appliances
5
(+) DC POWER CONNECTION