Re: What can I do to keep this board from warping?

Article View: sci.electronics.design

Article #725

Back to sci.electronics.design Previous Next

#725

From: mickgeyver
Date: Fri, 25 Sep 2009 23:16

18 lines
2098 bytes

On Sep 25, 7:02 pm, mickgeyver <eyezku...@yahoo.com> wrote:
> I'm trying to make a 10x scope probe that is capable of dealing with
> slightly higher voltage levels of about +/- 20v yet at a high
> impedance ~20Meg. This link "http://picasaweb.google.com/
> UncleAltheKiddiesPal/Probe?feat=directlink" has some photo's showing
> the probe and board warpage. The board was made from double sided
> 0.020-inch stock etched with a PCB milling machine (perhaps part of
> the problem). It is (obviously) hand assembled.  I would appreciate
> any tips or techniques that I could use to keep this board from
> turning into a potato chip during assembly.
>
> Thank you.
>
> al

dang G00gle.....

"http://picasaweb.google.com/UncleAltheKiddiesPal/Probe#"

Technical Details

Message-ID: <c94b5f7d-8f63-44a6-b3d2-3e0baeb5dccf@m20g2000vbp.googlegroups.com>

Path: arc1-ca.pugleaf.net!g2news2.google.com!postnews.google.com!m20g2000vbp.googlegroups.com!not-for-mail

References: <8ca1d668-3369-4f05-ac3c-a47ad550740b@d34g2000vbm.googlegroups.com>

Show Full Headers

Complete Article Headers

X-Google-Thread: a5a6238865,63be20ac21afdf53
X-Google-Attributes: gida5a6238865,public,usenet
X-Google-NewGroupId: yes
X-Google-Language: ENGLISH,ASCII
Path: arc1-ca.pugleaf.net!g2news2.google.com!postnews.google.com!m20g2000vbp.googlegroups.com!not-for-mail
From: mickgeyver <eyezkubed@yahoo.com>
Newsgroups: sci.electronics.design,sci.electronics.repair,aus.electronics
Subject: Re: What can I do to keep this board from warping?
Date: Fri, 25 Sep 2009 16:16:23 -0700 (PDT)
Organization: http://groups.google.com
Lines: 18
Message-ID: <c94b5f7d-8f63-44a6-b3d2-3e0baeb5dccf@m20g2000vbp.googlegroups.com>
References: <8ca1d668-3369-4f05-ac3c-a47ad550740b@d34g2000vbm.googlegroups.com>
NNTP-Posting-Host: 71.169.146.48
Mime-Version: 1.0
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: quoted-printable
X-Trace: posting.google.com 1253920583 27346 127.0.0.1 (25 Sep 2009 23:16:23 GMT)
X-Complaints-To: groups-abuse@google.com
NNTP-Posting-Date: Fri, 25 Sep 2009 23:16:23 +0000 (UTC)
Complaints-To: groups-abuse@google.com
Injection-Info: m20g2000vbp.googlegroups.com; posting-host=71.169.146.48; 
 posting-account=CI15OQoAAAC6uDDcowEG2ZpzPpr7BAun
User-Agent: G2/1.0
X-HTTP-UserAgent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.9.0.14) 
 Gecko/2009082707 Firefox/3.0.14,gzip(gfe),gzip(gfe)

Reply to Parent Message