Hi Group Im trying to hoook 2 straingauges up to INA125 Instrument Amps. Got the parts ordered, but Im having difficulties with the schematics.
I will need both Positive and negative strain from my 120 ohm straingauges. The straingauges will vary from 119.8 Ohm to 120.2 ohm so I need a Whetstonebridge. With the right gain from the INA125 this will give me a voltage( that my Arduino can read the easy part) from 0V to 5 V.
But how do I hook this up? Nomatter how look at it I will need a negative power supply also for the INA125. Am I missing something?
If anyone has a schematics it will be highly appreciated. Im Mechanical, not Electrical.