Uninterrupted power supply having no low frequency power magnetics
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Jun 19, 1990
Grant Date -
N/A
app pub date -
Jun 13, 1989
filing date -
Jun 13, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An uninterrupted power supply (UPS) systems is provided comprising a rectifier circuit, an inverter circuit and a battery boost circuit. One of the input terminals of the rectifier circuit is for connection to the ungrounded conductor of an AC power source and the other input terminal of the rectifier circuit is for connection to the grounded conductor of the AC power source. The UPS has a pair of load terminals for connection to a load. The input terminal of the rectifier circuit for connection to the grounded conductor is connected to one of the pair of load terminals by an electrical conductor whose electrical continuity is maintained from this input terminal to the one of the pair of load terminals without any isolation device such as a 50 or 60 Hz transformer being disposed between the input terminal and the one of the pair of load terminals.
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