Hey,
I have a wheatstone bridge formed out of strain gauges according to the attached file. When in use, this is fed with a supply voltage of +E/-E.
Normally it is connected to various amplifiers and such but I would want to find a simple way of just measuring the bridge itself.
So I want to build some device. What would be good is to run it from battery and just plug it in on the load cell and simply see the milivoltage output it gives.
I am not specifically experienced in electronics but have the feeling I would need something like this.
* voltage regulator
* operational amplifier to amplify the signal output from the bridge.
* adc to convert it to digital
* display (lcd/7-segment?)
* a lot of digital logic for the correct display of the voltage.
I was thinking I could use some microcontroller, since I then would get adc and the digital logic for free. Would that be a good approach or is it silly to use that for such an 'easy' task?
Is it possible to generate a stable say... +/-5V supply voltage from a 9V battery? What current output can I get from such?
There is no need for precision. If I would get results in terms of mV, that would be enough.
Any ideas?
I have a wheatstone bridge formed out of strain gauges according to the attached file. When in use, this is fed with a supply voltage of +E/-E.
Normally it is connected to various amplifiers and such but I would want to find a simple way of just measuring the bridge itself.
So I want to build some device. What would be good is to run it from battery and just plug it in on the load cell and simply see the milivoltage output it gives.
I am not specifically experienced in electronics but have the feeling I would need something like this.
* voltage regulator
* operational amplifier to amplify the signal output from the bridge.
* adc to convert it to digital
* display (lcd/7-segment?)
* a lot of digital logic for the correct display of the voltage.
I was thinking I could use some microcontroller, since I then would get adc and the digital logic for free. Would that be a good approach or is it silly to use that for such an 'easy' task?
Is it possible to generate a stable say... +/-5V supply voltage from a 9V battery? What current output can I get from such?
There is no need for precision. If I would get results in terms of mV, that would be enough.
Any ideas?
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