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Modern UPS - how do they work

K

kofi Mpengya

Jan 1, 1970
0
Please I have read that modern ups uses modified sine wave @ high
frequency
and its stepped up by a ferrite transformer. My worry is that most of
these
commercial ups are marked 50/60HZ. Meaning the output is an AC with a
frequency of 50 or 60Hz. How is this achieved?
 
J

Jimmy

Jan 1, 1970
0
A dc to dc converter first converts bsttery voltage to around 150VDC this
is the High frequency part then the 150VDC is converted to AC through a
switching circuit.
 
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