Apparently, this user prefers to keep an air of mystery about them.
3 How do I condition a signal with an op-amp that needs a negative rail where one is not provided? oct 5 '11
3 PH differential instrumentation amplifier oct 21 '11
2 PH interfacing to ADC oct 19 '11
1 12 bit vs 14/16bit ADC for ph sensor interface oct 17 '11