Self-starting motor

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salvus

Joined Apr 2, 2020
20
With this simple motors that people build:


They seem to always need a push to start. How can you make it self-starting? Would it self-start with AC instead of DC?

Many thanks :)
 

Tonyr1084

Joined Sep 24, 2015
6,269
My understanding of a motor is that it needs to change polarity in order for the motor to spin up. Like I said - "I could be wrong" - but I really don't expect this to work at all. Yet Yaakov said they're fun to build - so maybe I AM wrong.
 
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