From: DK7FC <73dk7fc@googlemail.com>
Message-ID: <541C3237.6080206@gmail.com>
Date: Fri, 19 Sep 2014 15:40:07 +0200
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To: rsgb_lf_group@blacksheep.org
References: <000301cfd3d1$8c53ee10$a4fbca30$@otenet.gr> <541C2031.5020902@gmail.com>
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Subject: LF: Breaking ground loops in PC-sound cards
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Hi all,

We all know the problems with QRM on the VLF/LF/MF devices in 
combination with computers. Sometimes even with good grounding, adding 
loads of common mode chokes, some QRM remains.
At work i just jumped over that device: ADuM4160 
<https://dl.dropboxusercontent.com/u/19882028/Datenbl%C3%A4tter/ADuM4160.pdf>

I can very well imagine there are many of you (as well as me) who would 
benefit at least a bit when using that device.

Worth to play with?

73, Stefan/DK7FC

PS: Maybe be used in combination with an ADuM5000 
<https://dl.dropboxusercontent.com/u/19882028/Datenbl%C3%A4tter/ADum5000.pdf> 
as shown in this image: 
http://www.dajac.com/blog/wp-content/uploads/2009/07/adi_usb_isolator_4160_circuit.png 
if that doesn't add QRM again...

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Hi all, <br>
<br>
We all know the problems with QRM on the VLF/LF/MF devices in
combination with computers. Sometimes even with good grounding, adding
loads of common mode chokes, some QRM remains. <br>
At work i just jumped over that device: <a
 href="https://dl.dropboxusercontent.com/u/19882028/Datenbl%C3%A4tter/ADuM4160.pdf">ADuM4160</a><br>
<br>
I can very well imagine there are many of you (as well as me) who would
benefit at least a bit when using that device.<br>
<br>
Worth to play with?<br>
<br>
73, Stefan/DK7FC<br>
<br>
PS: Maybe be used in combination with an <a
 href="https://dl.dropboxusercontent.com/u/19882028/Datenbl%C3%A4tter/ADum5000.pdf">ADuM5000</a>
as shown in this image:
<a class="moz-txt-link-freetext" href="http://www.dajac.com/blog/wp-content/uploads/2009/07/adi_usb_isolator_4160_circuit.png">http://www.dajac.com/blog/wp-content/uploads/2009/07/adi_usb_isolator_4160_circuit.png</a>
if that doesn't add QRM again...<br>
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