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Discussion Starter · #1 ·
I recently picked up a 16 amp switching PSU with a variable voltage control of 0.01 to 9 volts for use with my lathe, tire trimmer, and for breaking in motors.
I haven't used it yet for fear that the PSU will have issues with the feedback from the brush comm segment overlap.

Any feedback is welcome.

-Dave
 

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I've never seen any problems with bench type power supplies.
Some power supplies salvaged from computers do shut down when attempting to run brushed motors.

Any decent switch mode power supply has protection circuits which are designed to shut down when a load outside spec is connected. Seems like some designs detect the comm switching spikes from the motor as a load outside spec and turn themselves off.

I've never seen any evidence of this doing any harm to either the power supply or the motor. The power supply is back to normal once switched off and switched back on again. The motor has had its intended voltage for a brief period before the power turned off. So there is no reason not to try it and see if it works.
 
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