Electronics Forum | Wed Mar 13 14:17:03 EST 2002 | dougt
Are these sensors the reflective type? Maybe when the board is unclamped and it goes over the sensor it is seen, and then when it is clamped (raised) it is now out of the range the sensor was set for. That should be easy to adjust. A problem I've
Electronics Forum | Tue Mar 19 16:55:54 EST 2002 | Steve E ( Fujiamerica )
This problem happens when a dark part is placed where the main conveyer stop sensor is located.The machine does a board check ( back to loading pos ) . If a part is under the sensor it absorbs the beam and the machine thinks there�s no board. The ta
Electronics Forum | Wed Mar 13 22:16:30 EST 2002 | RDC
Basically, there are two types line scan image compare and vector analysis. I studied the topic for three months and am very pleased with my decision and the false call rate have been very low during the acceptance. Granted the one is more difficu
Electronics Forum | Fri Jul 11 12:37:23 EDT 2003 | Lake
We bought a VI Technology machine about 7 months ago. It's done a great job for us on military product (SMT cards - IPC A 610 Class 1 and 2). Results are only as good as the programming being done. Take a look at it (talk to them) and make a decisio
Electronics Forum | Sat Mar 09 06:52:07 EST 2002 | davef
14,000 uf now that's a BAC!!! Your thinking is correct. Connecting capacitors together works just opposite to connecting resistors together. * Capacitors in parallel add like resistors in series [Ct = C1 + C2 + ... Cn]. * Capacitors in series add l
Electronics Forum | Wed Mar 20 23:28:34 EST 2002 | Mahesh K.R.
I have some questions on this. What is the power rating of the power supply? In power supply where are you using the capacitor? What type of loads you connect to the power supply? If it is a simple 50Hz rectifier, There is no option. You have to us
Electronics Forum | Thu Mar 14 22:10:24 EST 2002 | alex_kirichenko
We always print adhesives.. And don't really have problems.. as long as your stencil is right and glue doesn't stay in appetures after first print. The parametrs same as for paste.. You can run it faster, but we don't have big enough runs to bother
Electronics Forum | Wed Mar 27 02:27:34 EST 2002 | mitchell
Printing glue is just as easy as paste, and in my experience printing delivers higher quality then dispensing. The one issue, that must be paid attention is that when you clean the stencil, you insure that it is really clean. The holes in a glue s
Electronics Forum | Wed Mar 13 10:20:51 EST 2002 | IAN T
WE HAVE A PROBLEM WITH SOLDER BALLING POST REFLOW WE ARE RELIABLY DISPENCING HERAEUS PASTE WITH A XY FLEX BUT WE'RE GETTING LARGE BALLS ON THE MELFS AND SMALL BALLS ON MOST CHIP PARTS WHAT SHOULD I BE LOOKING FOR? AND IS PAD DESIGN AN ISSUE (ROUND DO
Electronics Forum | Thu Mar 14 21:54:23 EST 2002 | alex_kirichenko
Try looking at your reflow profile. If he slope is too steep you may get solder balls. I've had the same problem, had to slow down the profile a bit. If you'd like, there was discution on wave soldering chart.. and Speedline one hase some points f