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April 1999

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Subject:
From:
Robert McGarry <[log in to unmask]>
Reply To:
Date:
Tue, 6 Apr 1999 12:39:22 -0400
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Hello Tech-Net,
 I'm working with a bare PCB which is a 10 layer board  and has
various signal and plane layers internally and solder mask and
trace layers externally. I'm experiencing a strange phenomena
during electrical test. The initial test fails as a short but when I put
an ohm-meter to the points, the resistance slowly increases then
becomes stable as if it were a capacitor charging up. when I
reverse the leads it discharges and then slowly increases
resistance.
Has anyone ever seen this occur or possibly have an explanation
or idea as to what might be happening.
Thanks,

Robert P. McGarry jr
Technical Sales Analyst
Proto Circuit Inc.
7 Ascot Pkwy.
Cuyahoga Falls, OH. 44223
330-572-3400 fx. 330-572-3434
[log in to unmask]
http://www.protocircuit.com

"QUALITY MANUFACTURED PRINTED CIRCUIT BOARDS"

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