I am building a differential amplifier to boost a 0-5mV (delta) signal off a load cell wheatstone bridge.
(for those who have not used falstad circuit simulator, the "2.53V" line are just voltage readings).
However, when factoring ambient noise, as observed in experimentation, the amplifier is essentially useless. I built the circuit in our lab yesterday to confirm this and unfortunately forgot to capture any scope screenshots. However, it appears that the noise off the wheatstone bridge is not from any direct source (eg 60Hz).
Apart from keeping wires short and ensuring consistent grounding, what else can I do to get rid of this noise? The very small delta of 5mV is observable on the scope when loading the load cell via an "up and down" translation on the scope. However, the channel itself has about +/-50mV of noise in the signal.
EDIT And I should finally add in case it is not clear, this is a DC circuit. Thus, frequency is ideally <1Hz.