Electronics Forum | Fri May 09 05:09:41 EDT 2014 | col_d
We're having an intermittent fault with a QSV-1 where it will on occasions oscillate violently during a run and this usually results in 1 or both Z-rods being destroyed, along with the nozzle currently fitted. This has been on and off for the last 2
Electronics Forum | Mon May 12 04:26:00 EDT 2014 | gazelle
Hello - I am looking for a source to supply low thermal EMF solder - can anyone provide pointers ? In the past a cadmium - lead alloy was used for this, but these are banned (RoHs) ... - the aim is to minimize thermo-couples on a very sensitive 4 lay
Electronics Forum | Tue May 13 08:59:13 EDT 2014 | gazelle
Hello davef - could it be you are confusing low thermal emf (Seebeck coefficient) with low temperature solder ? I am looking after solder wire and paste with low Seebeck coefficient - cadmium based alloy was OK but banned in europe due to RoHs direct
Electronics Forum | Tue May 13 17:53:54 EDT 2014 | anvil1021
Hello Michel...this might be a bit of a battle finding the low thermal EMF material that you are looking for. The first one that comes to my mind is Bismuth Selenium Telluride, with either a nickel or cobalt doping agent. Silver went away from this
Electronics Forum | Mon May 12 12:58:07 EDT 2014 | emeto
Hello all, I have a diode(gold plated)on some assemblies that gives me a a hard time. The paste is wetting too good and climbs the lead of the component and touches the body which is a defect. I just wonder what if there is a way to heat the board e
Electronics Forum | Wed May 14 18:22:07 EDT 2014 | hegemon
Dave is touching on one of those magical things that keeps us process engineers well paid and dancing (Well, some of us, lol). Heavy boards with light components. Solder Follows heat. Component heat up earlier. Repeat, Solder follows the heat. Care
Electronics Forum | Thu Jun 05 19:19:13 EDT 2014 | FD
When you assign the feeder location, there is a default XY value that gets assigned to that location. When you teach the actual XY pick position you move away from that default position, and if the actual pick position is too far away from the defau
Electronics Forum | Fri Jun 06 02:35:06 EDT 2014 | maciejbilu
Got it. That make sense. Pick position is quite far from these "normal" one. I ignore the message (and press start button again) every time and the whole mounting process starts normally. JUKI mount every component assigned except one from 44mm feede
Electronics Forum | Tue May 20 04:34:59 EDT 2014 | sarason
Well that would be a response from the VME bus. Is the PCBoard, the only controller on the buss, or is there a second controller that talks to interface boards etc. If so you might just have a problem with the second controller. Check the control sig
Electronics Forum | Wed May 21 15:13:56 EDT 2014 | wendynguyen234
Sarason, thank you very much for your support. There is an ISA interface board with just ribbon cable from window 95 PC to VME I/O DPRAM ver. 2 board in the same VME rack that has MVME-162-110 (CPU board), DSP, ADDA, AXIS & CONT boards. Do you think
