I have a thermopile which produces a very small voltage (about 1-4 mV as far as I can tell). I would like to amplify this up to about 5 volts if possible.
From what I have read, an OpAmp shoule be suitable for this. I have a 741 OpAmp but I can't seem to get it to do anything with my small voltage, although I'm not entirely sure I have it wired correctly as I have no experience with OpAmps. The 741 has pins for Input Bias among other things and I'm not sure what this does.
I have it wired similarly to this:
With the + from the thermopile connected to the non-inverting input of the OpAmp but nothing connected to the inverting input, and a voltmeter as the load to see what voltage comes out of it.
Any advice on wiring the 741 OpAmp, or other ways of amplifying the voltage is appreciated.
Thanks,
Jet
From what I have read, an OpAmp shoule be suitable for this. I have a 741 OpAmp but I can't seem to get it to do anything with my small voltage, although I'm not entirely sure I have it wired correctly as I have no experience with OpAmps. The 741 has pins for Input Bias among other things and I'm not sure what this does.
I have it wired similarly to this:
With the + from the thermopile connected to the non-inverting input of the OpAmp but nothing connected to the inverting input, and a voltmeter as the load to see what voltage comes out of it.
Any advice on wiring the 741 OpAmp, or other ways of amplifying the voltage is appreciated.
Thanks,
Jet