Is DC supply to a motor damaged if voltage is suddenly reduced?

E

EngineerLove

New member
Consider a DC motor driven by a DC supply. When supply voltage is suddenly reduced back emf becomes momentarily more than the supply voltage, which should drive a current in the circuit opposing the polarity of the supply. Will this damage the DC supply due to wrong polarity?
 
J

john

Active member
it depends on the supply circuit. but its good practice to include a "flyback diode" to take the reverse current.
 
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