Power supply apparatus

Electrical transmission or interconnection systems – Plural supply circuits or sources – One source floats across or compensates for other source

Reexamination Certificate

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Reexamination Certificate

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07964990

ABSTRACT:
An uninterrupted power supply unit is provided with a straightforward switch connected between a power source and a load to supply or interrupt a power to a system. The combination of the outputs from two kinds of single phase inverters enables compensating for a variation in the system voltage in the normal condition and to supply a predetermined voltage to the load after decreasing in the system voltage and opening of a straight forward switch.

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