Noise suppressing circuit
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United States of America Patent
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-
Sep 9, 2008
Grant Date -
Jul 20, 2006
app pub date -
Mar 2, 2004
filing date -
Mar 5, 2003
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A noise suppressing circuit comprises: windings (W11, W12) inserted to conductor lines (3, 4) at respective points (P11a, P11b) and coupled to each other through a magnetic core (11); a winding (W13) coupled to the windings (W11, W12) through the core (11); capacitors (12, 13) having ends connected to the conductor lines (3, 4) at respective points (P12a, P12b) and the other ends connected to an end of the winding (W13); and windings (W14, W15) inserted to conductor lines (3, 4) at respective points (P13a, P13b) and coupled to each other through a magnetic core (14). These components reduce common mode noise. Capacitors (16, 17) reduce normal mode noise in cooperation with leakage inductances produced by the windings (W14, W15).
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