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2 Phase Brushless DC Motor

2 Phase Brushless DC Motor

2 Phase Brushless DC Motor

I'm looking for information about 2 phase brushless motors.  I'd like to see the various methods for connection and winding both unipolar and bipolar(such as bifilar, etc.).  I'm interested in only using 4 transistors for the output stage.  I've done the internet searches and keep coming up with 2 and 4 phase step motors.  I feel that there is much similarity, but I'd like to see some information specifically about permanent magnet brushless dc motors.  Any help would be appreciated.  


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