Ignition coil driver device with slew-rate limited dwell turn-on
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United States of America Patent
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Nov 13, 2007
Grant Date -
Sep 28, 2006
app pub date -
Mar 24, 2005
filing date -
Mar 24, 2005
priority date (Note) -
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Abstract
A device to control the charging rate of an ignition coil for an internal combustion spark ignition engine. The device controls the turn-on rate of the primary coil by slew-rate limiting using switching devices and a Miller-effect capacitor in order to reduce secondary oscillation magnitudes originated by a sharp transition of the controlling switch.
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