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Hi All,
I noticed that the hall-effect current-sensor is quite expensive and not very easy to get. I was wondering if it would be possible to make one from scratch using a ferrite ring and an analog hall-sensor. This could save some money.
It should be possible to cut a slot into a ferrite ring with a grinder and a diamond-blade. Put the hall-sensor in the slot and you have a current-sensor. I can't think of a way to callibrate it though...
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