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Xtreme Power Conversion Corporation
E90 Service Manual
Page 7
Uninterruptible Power Supply
Inverter DC/AC principle
Bypass and inverter principle
As shown above, A (yellow box) represents bypass circuit of UPS, B (blue box) shows the inverter circuit, which
converts the Bus voltage into the AC output.
Charging principle
As shown above, charger reduces the Bus voltage to a suitable voltage to charge the battery.
A
B
Charging
fuse
Charging Fuse
Battery