Ignition apparatus
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United States of America Patent
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Issued Date -
Oct 10, 2019
app pub date -
Jul 6, 2018
filing date -
Apr 6, 2018
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Abstract
A current flowing in a sub-primary coil can be limited in an ignition apparatus in which a voltage, generated in a secondary coil at a timing when a current in a main primary coil is cut off, generates a secondary current, and then the sub-primary coil is energized so that a superimposition current is generated in the secondary coil and in which a sub-IC connected in series with the sub-primary coil is pulse-controlled so that a current flowing in the sub-primary coil is controlled and hence the superimposition current is controlled.
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