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Electronics => Electronics => Topic started by: silo_xtreme on July 12, 2007, 07:37:27 AM

Title: Current Sensors
Post by: silo_xtreme on July 12, 2007, 07:37:27 AM

Hello great bot lords :-)  I was wondering  - do you know of a current sense IC that can detect currents 30 A; or can only those "hall effect" current sensors get there?  I would perfer to find an IC because the hall effect sensors have that big copper core in the middile - this means more $$.

Any ideas?

Title: Re: Current Sensors
Post by: Admin on July 12, 2007, 08:53:59 AM

Digikey only has them going up to 7A . . .

You can always run a few in parallel, and in post processing multiply the output by the number you have in parallel.

Title: Re: Current Sensors
Post by: silo_xtreme on July 12, 2007, 09:11:57 AM

Ok, that would work.... but it end up costing more $$ in the end.  Looks like i'm going with the hall effect.  Thank you! 

Btw, I love your site - thank you for this wonderful resource.

Title: Re: Current Sensors
Post by: Kohanbash on July 12, 2007, 11:37:27 AM

Hi there is an NT-XX series of current sensors. They are available in 5,15,25, and 50 amp IC's.
http://www.newark.com/jsp/level5/module.jsp?moduleId=en_US/3586.xml

Title: Re: Current Sensors
Post by: Admin on July 12, 2007, 12:31:24 PM

sdk32285, their cheapest one is $25, almost 3x the hall effect option . . . ;D

Title: Re: Current Sensors
Post by: Kohanbash on July 12, 2007, 01:09:37 PM

Heres an even cheaper option.
http://www.allegromicro.com/en/Products/Part_Numbers/0712/index.asp
request a sample. :o

Title: Re: Current Sensors
Post by: silo_xtreme on July 12, 2007, 01:29:25 PM

Any idea what the max current that can handle?  I can't seem to find that data, andn wouldn't want to burn it out. 

Title: Re: Current Sensors
Post by: Kohanbash on July 12, 2007, 01:40:53 PM

+/- 5 - 30A

http://www.allegromicro.com/en/Products/Categories/Sensors/currentsensor.asp