Fwd: [ShumaTech] Jitter Problems solved

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Bruce Fairman

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Jun 15, 2010, 7:07:32 PM6/15/10
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--Thanks,

     bruce

KE6OKC





Begin forwarded message:

From: Cristian <b...@terranet.ro>
Date: 2010 June, 15 11:22:10 PDT
Subject: [ShumaTech] Jitter Problems solved
x-spam-score: 2

 

I've solved electronically the scale's jitter problem on DRO350.
It is a small PCB fitted in JP3 to JP5.
No other modifications.
Parts price around $10.
I'd like to sell my project for $1k.
Anyone interested?
Cristian

Before blaming me: after an accident I need an expensive spinal surgery, my pension is
reduced by 15% here in Romania due to the crisis so.....

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Rick Sparber

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Jun 16, 2010, 10:41:22 AM6/16/10
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Are you joking on all counts?

 

Rick

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Bruce Fairman

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Jun 16, 2010, 11:02:55 AM6/16/10
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no joke - the email quoted below was on the shumatech group, no responses yet.

--Thanks,

     bruce

KE6OKC





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Rick Sparber

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Jun 16, 2010, 12:46:21 PM6/16/10
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I’m not so sure this isn’t a joke.

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Bruce Fairman

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Jun 16, 2010, 1:10:47 PM6/16/10
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well, who knows. but the moderator saw fit to allow it to post.
so, if the email is true, how would one go about making a circuit that goes between the scale and scale interface? is it a qcc100 type of approach?

Rick Sparber

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Jun 16, 2010, 4:06:14 PM6/16/10
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Bruce,

 

I didn’t say it was a dirty joke, just a joke ;-)) Note his comment about $1K. I think he is being tongue in cheek here.

 

Assuming I am right about the root of the problem being a poor ground between scales and DRO datum, there is no circuit that is going to fix that.

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