Abstract: The present disclosure provides a medical device (100) for electrical stimulation. The medical device (100) includes electric circuitry configured to perform active charge compensation, said electric circuitry being connectable to at least one electrode arrangement (102) for electrical stimulation. The electric circuitry includes monitoring means configured to monitor at least one voltage associated with a stimulation network (108, 116); at least one variable resistive element configured to provide an voltage drop used in the active charge compensation: and adjustment means configured to dynamically adjust a resistance value of the at least one variable resistive element during the active charge compensation based on the at least one monitored voltage, wherein the adjustment means (202) is a finite state machine for neurostimulation.