Bit of a note re static. There is more to behaving properly than you might think.
-The IC tubes known as 'antistatic' were just coated so that the triboelectric effect was less. Those tubes were not protection against local static discharges. - read up on Faraday shielding. And the conductive and sealable bags/tubes. - And the requirement for earthing/grounding parts and people properly. - The common 'earth it or ground it ' practice causes dangerous situations. Especially when not current limited.. Consider this experiment. Earthing something and then moving it should be safe - right? Set up a simple electrophorus. eg a chargeable surface and a metal disk on an insulating handle. Charge the surface, bring the disk near it and then momentarily earth the disk. That disk is discharged and at earth potential, right? Momentarily earth it again to check - no spark. Now move the disk away. Maybe bring it up to the end of your nose. Won't get a spark off it will you? Or will you? Of course you will. The momentary earth was applied while the disk was in a strong electric field ['electrons' were pushed out of it or sucked into it]. I used to use that demonstration to get the bench techs to rethink their static procedures. The majority of techs guess that the disk stays 'discharged'. I have mentioned only a tiny part of the topic of course. 'We' also used to have failures during wave soldering and the board handling before and after it too. I built a small electroscope out of a coffee jar, tin lid and some thin conductive 'antistatic' plastic bag. I used that to demonstrate charged people and areas. Wasn't as sensitive as the electronic device procured from the ' static protection ' company BUT it had a much better influence on the workers. They could SEE the plastic move when it was charged. Protecting static sensitive components during all the phases of their association with you is not as easy as you might think. Probably the low failure rate is due to their actual robustness and not your procedures. But, by that, I don't mean stop being careful. Note: when static is misunderstood though, some so-called intuitive procedures are making the situation worse. The guys who didn't guess right about the electrophorous can't be trusted to handle parts correctly. eg What if they did all the 'right' things and then when the job was finished they removed their earths/grounds etc whilst the product was actually in some degree of electric field. The product [or insulated conductive parts of it] is the 'disk' of the electrophorus The above is just a nudge to read up on it; I am not an expert. John Kaesehagen Australia ----- Original Message ----- From: Edward Van Belkom To: neonixie-l Sent: Tuesday, August 29, 2017 2:56 AM Subject: [neonixie-l] Re: PV Electronics R568 Clock Project With Black R|Z568M Nixie Tubes How about add a piece of antistatic foam to the bottom of the foam? On Monday, August 28, 2017 at 12:18:00 PM UTC-5, gregebert wrote: Be careful with any plastic contraptions; they can create ESD problems. As long as no ESD-sensitive parts are on the board during handling, no worries. If you do have ESD-sensitive parts, it's probably best to mount them last. -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to neonixie-l+unsubscr...@googlegroups.com. To post to this group, send email to neonixie-l@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/018b0fb0-c226-4332-ad39-4b3450638bd0%40googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to neonixie-l+unsubscr...@googlegroups.com. To post to this group, send an email to neonixie-l@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/1B66550C5DBE499F9FC64B32F04A345A%40compunet4f9da9. For more options, visit https://groups.google.com/d/optout.