How is current interrupt (iR) performed?
The current interrupt technique periodically (10 times per second) does the following: 1. Measures the cell voltage (V1) 2. Rapidly removes the cell current 3. Measures the cell voltage a short time after removing the cell current (V2) 4. Reapplies the cell current 5. Calculates the cell iR resistance as follows: iR = (V2 – V1)/I (cell current before interrupt) The data is displayed and valid only when a current is applied that is large enough to make the voltage difference between steps 1 and 3 above a minimum value. The current interrupt process is suspended during impedance measurement experiments. *Update!
