Hi everyone!
I'm trying to understand how to measure very small changes in current - somewhere between parts per 10k or parts per million.
The idea I'm playing with is if I have some material based analog sensor that changes its resistance when exposed to an analyte.
Cheers
I'm trying to understand how to measure very small changes in current - somewhere between parts per 10k or parts per million.
The idea I'm playing with is if I have some material based analog sensor that changes its resistance when exposed to an analyte.
- Voltage: .1V
- Current through the system: 20mA
- Expected change in current: 2nA
- To monitor this small change in current would I just have a very high tolerance shunt resistor?
- Or is there an alternative strategy for measuring small changes in current?
Cheers