Thread: Batteries
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Old October 10th 16, 04:06 PM posted to sci.electronics.repair
Phil Hobbs Phil Hobbs is offline
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Default Batteries

On 10/10/2016 10:55 AM, wrote:
On Monday, October 10, 2016 at 9:55:49 AM UTC-4, Chris Jones wrote:

That could happen if the motor controller is very crude, but a good
motor controller would incorporate current limiting, and the
current limit should be set below the fuse blowing current.


Bluntly, I would be surprised if the motor controller is anything
more than a primitive SCR speed control and a fuse as a last-resort.
These go-buggies are just short of a racket, with a very few genuine
exceptions. And a brush-type DC motor will pull current even when not
turning right down to a dead-short when the voltage drops below what
is necessary to turn the motor against the load - and THAT is what
blows the fuse.


Torque is proportional to current, no?

Cheers

Phil Hobbs

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