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really? .89c ground lifters?

if i understand correctly (and I'm guessing that I don't), only one component in a given system should be grounded.

so does that mean that all you guys with your GNP-level systems, plumbed with bazillion dollar power cords, are using a bucketful of home depot-style ground lifters? I'm having a hard time wrapping my head around that. Is there some source for solid-gold cryo'd ground lifters I have not found?

How is this problem addressed? My searching skills are failing this morning...there was a lot of chilean and argentinean wine involved last night. thanks.
soundgasm
atmasphere's avatar
atmasphere
11,841 posts
 
Jea48, I wouldn't call that a ground loop. If there was something like that, it would cause the ground to be noisy. While a ground loop is also a noisy ground, the difference is that the former is caused by a malfunction rather than a gain stage later in the signal chain.
jea48
4,451 posts
 

I wouldn't call that a ground loop. If there was something like that, it would cause the ground to be noisy.
04-23-10: Atmasphere
Could it cause a ground loop hum?

Why would it be any different than ground current flow from a CATV system? In both cases current is flowing through the equipment ground. We know current will take any provided path back to the source. If the ground current flow is present what would prevent it also from flowing through the ics signal ground to other three wire cord and plug safety grounded equipment to get back to the source?
auxetophone
114 posts
 
"The only way to get a shock from the B+ is to actually put yourself in series between the B+ and B- ..... Lifting the safety ground would not change the likelihood one way or the other....."

Actually, if something goes wrong with the equipment - like a B+ wire touching the chassis - you're better off sending that to ground and blowing a fuse, than letting it sit out there to electrocute your kids.
auxetophone
114 posts
 
You might read this for a better explanation.
jea48
4,451 posts
 
Actually, if something goes wrong with the equipment - like a B+ wire touching the chassis - you're better off sending that to ground and blowing a fuse, than letting it sit out there to electrocute your kids.
04-23-10: Auxetophone
Auxetophone,
If B+ were to short across to the chassis the power supply would overload and hopefully blow a fuse, that is if the equipment has any power supply overcurrent protection. B- is usually connected to the chassis.....
Again in this case the safety equipment ground would not make any difference connected or lifted.

The Link you provided is in regards to three wire cord and plug equipment connected to an AC grounded electrical system. I am familiar with the article. The article tells it like it is.....
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