Controller for washing machine with alternately reversing drive motor
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United States of America Patent
Stats
-
May 18, 1993
Grant Date -
N/A
app pub date -
Aug 13, 1990
filing date -
Aug 13, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A controller for a washing machine with an alternately reversing drive motor wherein an electromechanical timer interfaces in conventional manner to electrical devices, and also switches line voltage to predetermined ones of a plurality of control lines to provide an encoded signal corresponding to the selected agitator stroke profile. The line voltage on the control lines is shifted to a DC voltage level compatible with a microprocessor that decodes the encoded signal, and then provides high rate control signals that gate high power solid state switches that switch line voltage to the respective stator windings of a permanent split capacitor motor. In such manner, the motor is driven in alternately reversing directions and, by way of a speed reducer, drives the agitator of the washing machine according to the selected stroke profile.
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Family
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Cited Art Landscape
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