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How to Reverse a Sewing Machine Motor
Posted by:
Rena Hall
(68.109.85.---)
Date: August 10, 2007 12:27AM The direction of rotation of all Household Sewing Machine Motors can be reversed. These motors are called AC/DC or Universal motors. They are the only kind of Rod Building motor that can be speed controlled with a foot pedal. There are two ways to reverse the direction of rotation, which are: 1). Switching the 2 wire leads to the Field Coil inside the motor housing. 2). Switching the 2 wire leads to the Carbon Brushes which excite the Armature. These 2 methods are schematically shown in the accompanying picture - note how the 2 respective wires are interchanged (reversed) If you do this modification, be sure to check for, and remedy, any exposed metal wires before closing up the motor. Have fun, Rena Sorry, only registered users may post in this forum.
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