[sdiy] Grounding + scope update

Pete Niedermayr pniedermayr at qwest.net
Fri Apr 30 02:47:11 CEST 2004


I have a couple of 7.2" LCD monitors (Legacy LM7) and was thinking this
would make a good display for an oscilloscope. Any thoughts or schematics?
----- Original Message ----- 
From: "Thomas Dunker" <dunker at invalid.ed.ntnu.no>
To: <synth-diy at dropmix.xs4all.nl>
Sent: Thursday, April 22, 2004 3:31 PM
Subject: [sdiy] Grounding + scope update


> On Thu, 22 Apr 2004, Scott Stites wrote:
>
> > Seems to me, and I could be wrong, but the rule of grounding only one
end of
> > a shielded cable usually applies to shielded cables that you're running
from
> > the PCB of a module to the panel connectors, ostensibly to prevent
ground
> > loops while still providing a grounded shield for the signals that the
cable
> > is carrying.
>
>  So how *is* your prefered signal grounding scheme for a modular? I ended
> up using some reasonably inexpensive Cliff jacks on the modules I'm
> building, and conveniently they can in fact ONLY be mounted so that there
> is *no* ground connection to the front panel metal, not that I can see how
> that can eliminate ground loops once modules get patched together
> anyway...
>
>  On my wacky scope idea, I am making some progress. I found a simple
> design using transistor deflection amps, here:
>
> http://www.du.edu/~etuttle/electron/elect29.htm
>
>  And I've found three possible solutions for the HV power supply that I'm
> considering. Stay tuned.
>
> Thomas
>
>



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