Author Topic: Potential damage via ground looping?  (Read 912 times)

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Offline cvriv

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Potential damage via ground looping?
« on: February 17, 2017, 10:59:37 pm »
I bought a Saleae Logic Pro 16 and was reading on their site about issues that I could run into when there is a ground loop... I'm kind of nervous now. What's deal with this?

I'm going to be using the analyzer mostly for school right now. I had to built this converter in class for my projects. It basically provides a stable +5v volts for anything my professor has us doing. The converter is powered by a 9v, 0.5A wall brick I bought off amazon. The gates we'll be messing with will be powered by this converter I built in class.

Can someone explain to me, simply, what ground looping is? From what I read I think it's when two or more devices share a common ground and if I touch a ground pin from the analyzer to a source terminal, the analyzer and laptop short the mains? 
 

Offline Vtile

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Re: Potential damage via ground looping?
« Reply #1 on: February 17, 2017, 11:06:58 pm »
Have you watched the "How not to blow up your DSO" or similar video from Dave?
 

Offline cvriv

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Re: Potential damage via ground looping?
« Reply #2 on: February 17, 2017, 11:16:18 pm »
Nope. I guess I should watch that video?
 

Offline Vtile

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Re: Potential damage via ground looping?
« Reply #3 on: February 17, 2017, 11:18:49 pm »
It is a good starter and might give you enough information to solve the rest with some logic thinking.

IIRC Dave goes pretty detailed explanation in it.
 

Offline Brumby

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Re: Potential damage via ground looping?
« Reply #4 on: February 17, 2017, 11:43:05 pm »
Nope. I guess I should watch that video?

Yep:

 


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