Electronics Forum | Fri Dec 02 20:24:22 EST 2022 | proceng1
Never heard of such a thing. I would think that the stencil is grounded through the blades when they make contact?
Electronics Forum | Tue Apr 23 13:51:03 EDT 2002 | Ken Bliss
We get inspected regularly and the only items we have had to ground where flammable liquid drums or a drum that had flammable or explosives fumes (partially full), I cannot see any reason why they would require grounding if no hazard was present. We
Electronics Forum | Fri Jan 29 17:49:47 EST 1999 | smd
| Dave: | | The problem is always the cost.....also it is required to properly connect the work bench and top to the grounding system. | | With most installations what we find is after a year or so, people have moved the benches around and the grou
Electronics Forum | Fri Aug 08 08:34:28 EDT 2003 | mleber
Problem areas are always ground connections. 20 pin dips have great flow on 18 of 20 pins, caps have poor upflow on the ground side only etc. That's my problem. 90% of the pwb looks great. Bottomside - awesome. Ground connections do not meet the 75%
Electronics Forum | Thu Apr 01 12:31:39 EST 2004 | russ
one more thought on this, When these boards are built new do we not have solder paste on the ground pad and then reflow? Has this caused any misregistration for you? I am assuming that you are not pasting the leads with the ground pad correct? I
Electronics Forum | Thu Mar 31 23:14:18 EST 2005 | Steve
Russ if your asking me if covering the surface of the granite defeats the purpose then I'm lost. An ionizer is a very good suggestion but they are not inexpensive. If the table is grounded and the metal bars are on a grounded mat, laminate etc. then
Electronics Forum | Fri Dec 16 11:32:49 EST 2005 | rlackey
We did some research a few years back, but you do have to test them regularly and replace them. http://www.twclean.com/debugging.html Here's Topline's justification (but then again they do sell them): ESD coats are required primarily for 3 reason
Electronics Forum | Fri Nov 15 11:03:48 EST 2019 | rgduval
I think Steve is on to it. The wire is not getting hot enough to wet. Either the solderer is attempting to solder too quickly, or the PTH is connected to a ground plane. The solder sticking up through the hole leads me to think it's connected to a
Electronics Forum | Tue Aug 04 14:06:59 EDT 2020 | stephendo
Are you sure it is not a 240V transformer with a center tap? That is how residences are wired. If you use the center tap you get 120V. The other tap to center tap is 120V that is 180 degrees out of phase. So if you use the two outside taps you get 24
Electronics Forum | Tue Aug 04 14:28:39 EDT 2020 | ttheis
Yes, I am certain it is 240 corner grounded delta. It confuses many electricians and it took me some time to understand. It is fed from a 480:240 delta 200A transformer. As I mentioned, they have a lot of Bridgeport 3ph machines and cnc machines conn
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