Something that has been bugging me for the last runs I did : I use a Powerpak 300 from BioRad in clamped voltage mode. However, the current intensity fluctuates quickly (at 30V, from 0.7A to 1.2A). This is a problem because if the current changes too quickly, the power generator shuts down thinking the circuit is shorted (I have the error message : "change in resistance detected"). If it happens during the night, the system is then not running for a long time, because it has to be manually reset.
Does anyone have the same problem, or is there something wrong with my setup?