RE: [CAD_CAM_EDM_DRO] Simple DRO new idea

DIGITAL READ OUT



At 07:37 AM 9/5/01 -0400, you wrote:

>um.... sorry, but what does 'DRO' stand for?
>---Dave 'the newbie' Lantz
>
> At 10:46 PM 9/3/01 +0000, you wrote:0
>>"M. SHABBIR" wrote:
>>
>>> hi
>>> u can find ring magnet in back of audio speaker.
>>>
>>> shabbir
>>>
>>> At 02:26 PM 9/2/01 -0600, you wrote:
>>> >Scott
>>> >I am working on a very simple dro using a special purpose Hall effect
>sensor
>>> >and a simple up down counter connected to a 8 digit led. It would work
>as
>>> >follows
>>> >a linear magnet strip or a ring magnet with alternating north and south
>>
>>The ring shaped magnet it a speaker has one pole in the center, and one
>pole
>>on the OD (some fold the design, so each face is a pole). This won't work
>>as a magnetic encoder, since the poles don't move when it is rotated.
>>A 2-pole motor with a ring magnet only has 2 poles for one revolution,
>>so that may still not work well for your application. Floppy drive motors
>>from the ones with the motor in the hub usually have more poles, and may
>>have a tach ring that has many poles per rev. These are pretty large
>>diameter, however.
>>
>>Jon
>>
>>
>>Addresses:
>>FAQ: http://www.ktmarketing.com/faq.html
>>FILES: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/
>>
>>Post messages: CAD_CAM_EDM_DRO@yahoogroups.com
>>Subscribe: CAD_CAM_EDM_DRO-subscribe@yahoogroups.com
>>Unsubscribe: CAD_CAM_EDM_DRO-unsubscribe@yahoogroups.com
>>List owner: CAD_CAM_EDM_DRO-owner@yahoogroups.com, wanliker@...
>>Moderator: jmelson@... timg@... [Moderator]
>>URL to this page: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO
>>bill,
>>List Manager
>>
>>
>>
>>Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>>
>
>
>Addresses:
>FAQ: http://www.ktmarketing.com/faq.html
>FILES: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/
>
>Post messages: CAD_CAM_EDM_DRO@yahoogroups.com
>Subscribe: CAD_CAM_EDM_DRO-subscribe@yahoogroups.com
>Unsubscribe: CAD_CAM_EDM_DRO-unsubscribe@yahoogroups.com
>List owner: CAD_CAM_EDM_DRO-owner@yahoogroups.com, wanliker@...
>Moderator: jmelson@... timg@... [Moderator]
>URL to this page: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO
>bill,
>List Manager
>
>
>
>Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>Addresses:
>FAQ: http://www.ktmarketing.com/faq.html
>FILES: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/
>
>Post messages: CAD_CAM_EDM_DRO@yahoogroups.com
>Subscribe: CAD_CAM_EDM_DRO-subscribe@yahoogroups.com
>Unsubscribe: CAD_CAM_EDM_DRO-unsubscribe@yahoogroups.com
>List owner: CAD_CAM_EDM_DRO-owner@yahoogroups.com, wanliker@...
>Moderator: jmelson@... timg@... [Moderator]
>URL to this page: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO
>bill,
>List Manager
>
>
>
>Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>

[Non-text portions of this message have been removed]