Dual gain pressure control solenoid having one bobbin with two individually wound coils, a high force coil and a low force coil for improving transfer function
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United States of America Patent
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May 4, 1999
Grant Date -
N/A
app pub date -
Aug 15, 1997
filing date -
Aug 15, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A dual gain pressure control solenoid having two individually wound coils. One coil has a greater number of turns than the other coil and operates as a high force coil. The coil with a lesser number of turns operates as a low force coil. The low force coil provides improved resolution over a predetermine range of input current, while the high force coil provides less resolution but greater force. The coils may be used in various operational modes in order to achieve improved resolution over a predetermined current range.
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