Electronics Forum | Tue Feb 19 16:34:15 EST 2002 | djarvis
Dave, Nice one. I was a roadie for Men At Works' tours to the States in '82 & '83. W had a crew t-shirt printed up that had on the front the musical notation for the hook in 'Who Can It Be Now' with the words printed underneath 'Who F.....g Cares'. O
Electronics Forum | Tue Feb 19 08:48:01 EST 2002 | wen1555
Payback can be calculated in many ways. The main issue is what revenue/margin you can secure from the investment. You need to decide the period in which the equipment will depreciate, I would suggest 5 years max. Obviously devide the total cost by 5
Electronics Forum | Wed Feb 20 02:20:10 EST 2002 | madreindeer
All, Thanks for your answers and (CAaaaaal)yes I would like to have a detailed list please. This is a new field to me as I do have to look after a production in Europa and far east. Most of the times money is not a problem but,They want to know ho
Electronics Forum | Tue Feb 19 14:00:55 EST 2002 | global
We have had some discussions about what causes parts to lift out of the holes when going over the wave on our flow solder machine. The machine being used is a Treiber (700 series). There are two bottom pre-heaters and one top pre-heater. We try to pr
Electronics Forum | Tue Feb 19 15:59:55 EST 2002 | pjc
Surface tension is a likely cause. Surface tension is a negative wetting force. You may have a solderability problem. Be sure your flux is properly activated according to the flux mfg. top side board temp. specification. When surfaces to be soldered,
Electronics Forum | Thu Feb 21 10:13:27 EST 2002 | Vince Whipple
Hi Dave G, This is an interesting problem.. I can only add the following: - Try trimming the pins and see it this helps.. sometimes the decreased surface area will lessen the surface tension enough to minimize the effect of bridging. - As Dave F was
Electronics Forum | Mon Feb 25 18:10:13 EST 2002 | stepheno
When you say "dropping" I assume you mean "rejecting" them because co-planarity is outside the tolerance you have set and the machine is putting them on the reject belt or tray as the case may be. I worked for a CM with an MPA-G3. One customer suppl
Electronics Forum | Wed Feb 27 11:51:18 EST 2002 | jax
Doug, Depending on the machines in question, the release characteristics change. Most of the mechanically driven machines simply stop the vacuum by lowering the nozzle and release the stored vaccum at impact when the nozzle starts to compact back int
Electronics Forum | Wed Feb 27 14:07:25 EST 2002 | Stefan
In order to kiss off the components with an air blow, there are two times to consider: 1. reaction time of the solenoid ( to shut off the vacuum and turn on the air ), 5-10 ms 2. time required to fill up an air hose, which leads to the nozzle. Assumi
Electronics Forum | Wed Feb 27 22:24:28 EST 2002 | davef
I own and have read this book. While it is better than the average soldering book, it is not the first book that I reach for in trying to sort through a problem. It introduces a broad range of soldering methods with a reasonable amount of detail, b
