Author Topic: Galvanic seperated input??  (Read 3248 times)

Martin s.

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Galvanic seperated input??
« on: June 10, 2013, 09:03:30 AM »
Hi every One!
I have a problem measuring a voltage signal from another device. The voltage seems to oscillate with about 2Hz… It seems that the source is galvanic separated, and needs to be, so how can I measure this voltage when I cannot connect “ground” ??
Hope this makes sense  :)

Regards Martin

Offline Jakob

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Re: Galvanic seperated input??
« Reply #1 on: June 10, 2013, 09:48:04 AM »
Hi Martin

In a similar case I have used an isolation amplifier from PR-electronics, it worked without a problem.

here is a link:
http://www.prelectronics.com/idd955.asp?Prod_Title=2204

I hope it helps

Regards Jakob

Martin s.

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Re: Galvanic seperated input??
« Reply #2 on: June 10, 2013, 10:26:54 AM »
Hi Martin

In a similar case I have used an isolation amplifier from PR-electronics, it worked without a problem.

here is a link:
http://www.prelectronics.com/idd955.asp?Prod_Title=2204

I hope it helps

Regards Jakob

Hi Jacob
That was what i feared… I hoped it war passible to do this without any ”external” component. Today there is a PWM driver n the machine, and it is able to handle the galvanic separation, so having to add  the PR module does not make it more simple ?