Transient protector circuit for multi-phase energized power supplies
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United States of America Patent
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Issued Date -
Jan 19, 2006
app pub date -
Jul 13, 2004
filing date -
Jul 13, 2004
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Circuits and systems are used in multi-phase power supplies for the prevention of transient currents. Phase to phase and phase to neutral metal oxide varistors ('MOV') are replaced with a single DC power supply connected MOV. Transient currents are limited by resistors that are connected in series to each of the three phase inputs. Comprising a single DC connected MOV, protection from transients between any of the four inputs is provided. The phase to phase and the phase to neutral transient currents are routed, using diodes, through a single MOV connected between the positive and negative input terminals of the DC power supply.
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