On Thu, 25 Jul 2002, Brendan Moran wrote:

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>> On Wed, 24 Jul 2002, Jim wrote:
>>
>> >I have 2 motors that are controlled with a sn754410 hbridge.
>> >Is there any way to stop them from ringing?.
>> >When I pulse width modulate them the slower they go the louder the
>> >ringing gets.
>>
>> Use a friction brake or viscous damping.
>
>Ahh, but would viscious damping be more effective?

Yes iff you can afford the right lubricant (special silicone oil ordered
to match the required spec). A friction brake will get you there too. Btw
I hope that your speller is down, that word you used does not sound so
good.

Peter

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