The Cyber-Spy.Com Usenet Archive Feeds Directly
From The Open And Publicly Available Newsgroup
This Group And Thousands Of Others Are Available
On Most IS NNTP News Servers On Port 119.
Cyber-Spy.Com Is NOT Responsible For Any Topic,
Opinions Or Content Posted To This Or Any Other
Newsgroup. This Web Archive Of The Newsgroup And
Posts Are For Informational Purposes Only.
From: "Don K"
References: <email@example.com> <firstname.lastname@example.org>
Subject: Re: Ground loops?
X-Newsreader: Microsoft Outlook Express 6.00.2600.0000
X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2600.0000
NNTP-Posting-Date: Sun, 15 Sep 2002 12:00:58 CDT
Organization: Giganews.Com - Premium News Outsourcing
X-Abuse-and-DMCA-Info: Please be sure to forward a copy of ALL headers
X-Abuse-and-DMCA-Info: Otherwise we will be unable to process your complaint properly
Date: Sun, 15 Sep 2002 17:00:58 GMT
"Ban" wrote in message
> The star-grounding concept originates from Audio, where a very small hum can
> be annoying, even a -60dB noise is audible.
> With digital circuits there is a large band of immunity, even if there is a
> 10mV hum on connecting lines, it will not have any impact on the function,
> so you try to bring crosstalk down with every second wire grounded etc.
Which illustrates the point that you only have to do as much as is necessary
to bring the crosstalk down below some tolerable level.
In one application I couldn't even mount bulkhead female/female SMA
connectors together on an aluminum panel because of the crosstalk.
A non-conductive panel actually worked better.
If you want the ultimate in isolation, use optical fibers for all signal I/O
and power requirements.
Go Back To The Cyber-Spy.Com
Usenet Web Archive Index Of
The sci.electronics.design Newsgroup