The Cyndustries List

It's good know that it's not done this way anymore.  Is this change documented somewhere?  I didn't see it on the power faq.  

Isn't this a potentially dangerous configuration?  

I had a TR-909 running on my supply that started resetting itself while the the grounds were connected.  For months I've experienced other grounding issues while interfacing my Serge/Driscoll rig with other gear just because the signal ground was connected to the Major Power Supply, even when it was turned off.

It seems like I need to not only disconnect the jack from earth ground but also disconnect it from chassis ground and then connect the jack to signal ground.

epk

--- In The_Cyndustries_List@yahoogroups.com, Cynthia Webster <cynthia.webster@...> wrote:
>
> Some of the earlier Power Supplies connected to the green ground jack to 
> the chassis ground but we stopped doing that some time ago.
> you Can simply snip the wire to earth if you like, or ad a switch as a 
> ground lifter.
> 
> More about the subject here
> 
> http://www.cyndustries.com/modules_powerdist-FAQ.cfm
> 
> Best Wishes!
> 
> Cynthia
> 
> http://launch.groups.yahoo.com/group/The_Cyndustries_List/
> 
> 
> 
> 
> 
> electronicpressskit wrote:
> >  
> >
> > So today I was using my Modcan/Cynthia system and cross patching with 
> > my Driscoll/Serge system and ran into some grounding issues.
> >
> > The Modcan/Cynthia rig is powered with a Cynthia Major PSU and the 
> > Serge/Driscoll rig is powered with a power-one supply I got from ebay 
> > and wired up myself.
> >
> > On the PSU I wired, I took the signal ground to my ground jack to use 
> > when connecting to other PSU's. Upon examining the Major PSU I found 
> > that the grounding jack is connected to the PSU chassis and the earth 
> > ground.
> >
> > After discovering this I remembered I had a Serge PS6 in my closet so 
> > I opened it up and the ground jack is indeed connected to the signal 
> > ground.
> >
> > I'm wondering if this is how the Cynthia PSU is supposed to be wired? 
> > I can't figure out how it makes sense to wire it that way.
> >
> > Anyone have an explanation?
> >
> > epk
> >
> >
>