Re: control of 24VAC motor?

• From: Joseph2k <joseph2k@xxxxxxxxxx>
• Date: Wed, 01 Feb 2006 15:18:47 GMT

cs_posting@xxxxxxxxxxx wrote:

> joe_d_builder@xxxxxxxxx wrote:
> 
>> I really don't have the specs as I haven't bought the unit yet (need to
>> know if it will do what I want first).  Here's the unit I'm looking at:
>>
http://www.21best.com/21_best/electronic/security/video/pan_tilt/for_sale_.html#Weatherproof
> 
> I'm starting to wonder if this isn't a stepchild of TV antenna rotator
> technology.  If that's the case it may be gearhead and might even by
> synchronous (ie, speed locked to frequency, and quite slow) as it seems
> that's how the feedback-less systems must work?
> 
Most of these look like induction motor - worm gear drives.  Hardly suitable
to variable speed unless you want to rebuild the control electronics as
well.
-- 
JosephKK
Gegen dummheit kampfen Die Gotter Selbst, vergebens.  
--Shiller
.

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