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12:04 AM
Folks, we've got a serious biomedical engineer among our major contributors. But my memory refuses to serve me, and I can't recall the name. I remember that his user ID is Firstname Lastname. I remember that he's in the US east of Mississippi.
Aha, found him. It was Scott Seidman that I had in mind.
 
 
14 hours later…
1:55 PM
@ThePhoton Well it would save me about ~100EUR for ~300 connectors in a 2~3 week project, which isn't something I would discard. But then if I consider the cost of shipping samples to find out if they actually fit + the slight risk, the ~100EUR difference starts getting smaller and not worth it. (the issue is that I'd buy the molex from mouser which is relatively expensive in europe, and I can find the TE one with a nice price already in EU). (BTW what company is that? Just curious)
 
 
2 hours later…
3:40 PM
I'm getting 50Hz noise going on my DAC because of crappy laptop power supply (two prong though). USB isolator is difficult to approach in my place. Reversing the plug didn't work. Audio isolation transformer degrade sound quality, the good ones are expensive. Well yeah, I'm stuck.
 
@Unknown123 . . . Is the DAC integral (built in) to the laptop or external DAC ?
 
4:33 PM
@Marla i'm using external DAC at the moment, but it's still the same whether internal or external, the noise crawling everywhere.
Having fun with multimeter, I could measure 75VAC laptop case to my body and some microcurrent flowing if I stick my foot on the ground.
If I keep always touching the metal case of my laptop the 50hz buzz is gone, magic, haha
 
4:49 PM
@Unknown123 . .Well, since we are having fun here, try putting a 50 hertz filter in line with your incoming power to the laptop.
But really, sounds like a ground loop problem, which can be difficult to diagnose.
 
 
4 hours later…
Jim
8:28 PM
Anyone here familiar with drop-shipping components to a PCBA manufacturer overseas (china, in my case), to have them assembled, and re-imported back to US? Trying to figure out how to minimize import/export fees
 
 
3 hours later…
11:36 PM
Who was the moron engineer at agilent that thought it would be great to make a power supply with an output that needs to be powered on to adjust it?!?
@Jim I had a conversation about that today, we won't do that because they will most likely sell our designs
 
11:51 PM
@Unknown123 try putting some ferrites on the cables, it blocks high frequency noise
 

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