Electronics Forum | Thu Nov 04 17:33:24 EST 1999 | John Thorup
Yes, the Moon has set. Final signoff was 10.1.99 and several threads appearing in the previous 10 days or so sort of say why. List by author to check. I was out for most of this period and missed it as well. I went looking after Brian's post. I
Electronics Forum | Wed Nov 10 13:06:18 EST 1999 | Earl Moon
Interesting post by the owner. Cunli told an entirely different story about his departure that precipitated mine. I'm of no consequence but Cunli will always be missed until something changes beyond fluff as forum style improvements. Where's the subs
Electronics Forum | Thu Nov 04 10:07:32 EST 1999 | Wolfgang Busko
Sometimes when using a new pot of paste you get one which isn�t good at all without any noticable appearance at first sight. You might try a new one. Despite the fact that you run the same profile as usual a defect of the oven of any kind unnoticed c
Electronics Forum | Wed Nov 03 04:02:51 EST 1999 | Wolfgang Busko
Hi Wes, it may not be the same but I had a problem with one Phillips machine which started unpredictible mismounting all components about 1mm. When it occured you couldn�t get it do it right again unless you turned it down and restarted it. The servi
Electronics Forum | Wed Nov 03 10:30:27 EST 1999 | John Thorup
Hi Anthony I'm not sure I understand your question. Do you mean move to a better or more precise placement or to an error or bad position? I'm not aware of any calculation that can predict movement since it is based on so many factors like component
Electronics Forum | Wed Nov 03 20:02:44 EST 1999 | Anthony Winston
Well John here is the situation: I need to place an infrared transistor (optical element) with a tolerance of +/-.003", this is not a problem. A lens is positioned over the optical element and snapped to the PCB via three holes that have a toleran
Electronics Forum | Wed Nov 10 01:58:11 EST 1999 | Adel Zaky.
Mr. John A coleague of mine insisted to ask you about using a normal general purpose plastic baskets for handling the PCA's. He sujests to cover the interior of the baskets using some kind of ESD safe material(like those special ESD safe bags) to av
Electronics Forum | Mon Nov 01 19:52:47 EST 1999 | John
I have a thru-hole PCB that malfunctions when "no clean" flux is left on certain parts of the board. I have specified "the PCB shall have no flux residue". Our state side vendors (we have one offshore -they still use freon to clean) are complaining t
Electronics Forum | Wed Nov 03 21:17:40 EST 1999 | Doug B.
Yes this is absolutely true. No-clean flux residue has various affects on the functionality of circuitry especially high impedance circuits. It also affects solderability, and reliability. No-clean flux will always leave a detectable residue. Mos
Electronics Forum | Fri Nov 05 09:52:44 EST 1999 | Dave F
John: Three things: 1 You are correctamundo!!!! What's the difference between slopping alcohol on dirty boards and washing dirty boards? Clean boards!!!! By the time those very nice people get done with their alcohol cleaning (a nip for the boar
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