Electronics Forum | Wed Dec 07 12:28:37 EST 2005 | PWH
I have seen problems similar to this caused by too high concentration of cleaning solution used in ultra-sonic cleaning process. If cleaning solution is used, make sure it is compatible with solder process. Also, improper mixing of fluxes and solde
Electronics Forum | Thu Mar 02 05:30:45 EST 2006 | arnie
we are encountering a problem wherein the ballast transformer we built on the pcb produced a vibration or a humming sound.? what is the possible cause on it. what may the problem on the assembly of transformer.
Electronics Forum | Thu Mar 02 13:31:25 EST 2006 | russ
That was a good reply for someone that has been Dehumanatized! HAHA
Electronics Forum | Thu Mar 02 13:49:43 EST 2006 | Chunks
Dehummmmmmmm - anized!
Electronics Forum | Thu Mar 02 15:32:30 EST 2006 | russ
got it!
Electronics Forum | Thu Mar 02 07:54:07 EST 2006 | davef
Here's some explanations: http://www.psaudio.com/articles/hum.asp http://www.signweb.com/neon/tips/neontip12.html We like the 'don't know the words' one.
Electronics Forum | Thu Mar 02 13:13:14 EST 2006 | Chunks
A ballast is the device needed to energize fluorescent lamps during operation. In all fluorescent lighting systems, the ballast provides the proper voltage to start the lamp and then regulates the electric current flowing through the lamp to stabiliz
Electronics Forum | Thu May 05 02:40:30 EDT 2016 | padawanlinuxero
Hello guys! I have a question for you guys, we have been working with a cleaning agent call Safewash (SWAS) from electrolube, we use this safewash to clean the flux residue from the boards after wave soldering, since or customer doesn't like to have
Electronics Forum | Mon Feb 25 15:09:06 EST 2002 | jax
Kelvin, You can find the Standard acceptable levels and testing procedures from IPC. Here's a little advice from the fellas' over at PCFAB: As a guideline, we recommend that for assemblies processed with low-solids flux technology and that are not cl
Electronics Forum | Wed Dec 07 00:44:31 EST 2005 | arnold
were having a problem on the units after soldered. after few hours or days the soldered wires has green decay. what does it cause. how can i prevent this.
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