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Electronics => Beginners => Topic started by: tony3d on September 23, 2017, 01:41:05 pm

Title: Stepper motor inrush current
Post by: tony3d on September 23, 2017, 01:41:05 pm

Just wondering if the current induced be manually pushing a 3d printer bed around, can damage the printers circuitry?

Title: Re: Stepper motor inrush current
Post by: Karlo_Moharic on September 23, 2017, 03:16:23 pm

Unless you are pushing the bed with 10G of force , the answer is no. You will induce a couple of milivolts , maybe a volt at most.This is too small of a voltage to damage anything.

Title: Re: Stepper motor inrush current
Post by: tony3d on September 23, 2017, 04:46:18 pm

I can very easily spin the shaft of a small D.C. Motor, and generate over 3 volts. Moving a bed even rather slowly looks faster.

Title: Re: Stepper motor inrush current
Post by: Karlo_Moharic on September 24, 2017, 08:46:43 pm

It would took several hundred volts for you to damage something , you have nothing to worry about.

Title: Re: Stepper motor inrush current
Post by: Shock on September 25, 2017, 11:46:57 am

Thou shalt measure, with thy min/max.

Title: Re: Stepper motor inrush current
Post by: Raj on September 25, 2017, 05:53:35 pm

unless you have a badly designed circuit,no.

most motor drivers have diode protections built in.