--- In
Homebrew_PCBs@yahoogroups.com, Stefan Trethan <stefan_trethan@...> wrote:
>
> People who say "because that's just how it is" or "end of discussion"
> as a rule are not worth my time talking to.
Some things are pretty much self evident. Using the automobile example, you might say that a car has to have brakes, end of discussion. Just as don't cross the street blindfolded, end of discussion.
To an electrical engineer, this might be self evident. Considering the amount of silvery antistatic envelopes, pink foam, pink bubble wrap, and black conductive foam that I have been sent with components that I have ordered, it seems self evident to the manufacturers and sellers.
> From: Stefan Trethan Sent: Saturday, December 24, 2011 02:28
>
> Come on people, stay realistic.
> Steve is most likely not going to make assemblies for an aircraft
> or anything like that.
Whether it's a controller for an aircraft or a blinking led for a child, he doesn't want a failure in either case.
>
> In a typical home shop or even development lab setting you'll not
> notice the effects of ESD measures - there just aren't any failures
> even if you take no measures at all.
I use the SMD to DIP adapters. This gives me the advantage of being able to test the SMD device before placing it in the finished circuit. I've had more than my share of devices that did not sit correctly on the pads and therefore did not work. But in all this time there have been two devices that were soldered exactly right (close up lens on digital camera to check) , that did not work right. One part did not respond at all and one part had some gates working and some not. These both happened during the winter (low humidity) while I was working in a carpeted room. The same circumstances where petting my cat will give us a shock. I now have a dedicated wire running from the metal legs on my table to a nearby cold water pipe.
> Mike KC7NOA wroteÂ….
>
>I wouldn't use it ... I would pintch a stop sign for a flat aluminum > surface first!!
Taking apart old electronic devices that have been thrown away, like fax machines, can yield aluminum for making this. An old, large UPS might even have some giant heat sinks where the fins could hold circuit boards.