8' drive on PC troubleshooting

[Dwight K. Elvey]

>From: "Randy McLaughlin" <cctalk at randy482.com>
>
>From: "Wai-Sun Chia" <waisun.chia at gmail.com>
>Sent: Sunday, March 06, 2005 10:36 PM
>> On Sun, 6 Mar 2005 21:09:01 -0500, Dave Dunfield <dave04a at dunfield.com> 
>> wrote:
>>> All the discussion on stacking two PC supplies and cutting
>>> grounds to try and keep them isolated seems like asking
>>> for trouble....
>>
>> Asking for trouble is correct.
>> After all, to get 24V and I don't think a typical 8" drive will
>> surpass 1A anyway, a LM317 plus a couple of passives and a small
>> transformer is  more than enough to do the job. If you get the LM317K,
>> then it'll even do up till 1.5A provided you give it an
>> appropriately-sized heatsink.
>>
>> /wai-sun
>
>
>SA800's require 1.7A on the 24v line.
>
>Randy 
>

Hi
Randy is right. They used the 24V line for the stepper.
The 12V line was used for the analog electronics.
 Still, as I recall, the 24V didn't need exact regulation.
I'd have to check my schematics for the drives.
Dwight

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