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Article #726Re: What can I do to keep this board from warping?
From: Michael A. Terrell
Date: Sat, 26 Sep 2009 00:16
Date: Sat, 26 Sep 2009 00:16
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mickgeyver wrote: > > 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#" It looks like you used cheap phenolic PCB materials. Fiberglass is a lot more stable. -- You can't have a sense of humor, if you have no sense!
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