WF-D55WSA, WF-D60WSA - LG Washing Machine Service Manual (repair manual). Page 7

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■ 
Structure of DD Inverter DC Motor 
 
 
` 
 
Rotor 
Motor 
Sensor module 
Coil 
Stator  
Magnet 
■ 
Working Principle 
Motor speed is controlled by the signal width of pulse. 
Oscillogram  
(Low rotate speed ) 
Narrow pulse width 
(Low rotate speed) 
Oscillogram  
 (High- rotate 
speed ) 
Broad pulse width 
(High- rotate speed ) 
 
 
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