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Author Topic: Minimum current rating for motor driver  (Read 2058 times)

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Offline vidamTopic starter

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Minimum current rating for motor driver
« on: June 04, 2008, 01:10:08 PM »
if a motor driver has a minimum current limit of 10 Amps does that mean it won't drive a motor with < 10 Amps?

Offline Rebelgium

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Re: Minimum current rating for motor driver
« Reply #1 on: June 04, 2008, 04:41:32 PM »
minimum current limit? never heard of it...
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Offline RobD

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Re: Minimum current rating for motor driver
« Reply #2 on: June 05, 2008, 05:15:00 PM »
Some devices, like switch mode power supplies, require a minimum load across the output.  If the minimum load is not met the internal components tend to fry.  Try running a small current consuming device on an old computer power supply and it will eventually die.

I've never seen a driver board for >10A motors, but if one was designed to operate at a minimum of 10A I would suspect the designers added that requirement for a reason.  I'm sure it would work....for a little while. 


Offline benji

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Re: Minimum current rating for motor driver
« Reply #3 on: June 06, 2008, 03:55:47 AM »
Quote
Some devices, like switch mode power supplies, require a minimum load across the output
this is the same as maximum current  ;) you can calculate it easily
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