Method and a circuit arrangement for the electropermeation of living cells

A method for the electropermeation of living cells between at least two electrodes over a predetermined interval with an electrical potential or a current, characterised by the following features: a voltage or current source which is not exhaustable over the interval is applied to the electrodes via a controllable power semiconductor functioning as a regulator; the course of the potential or of the current during the interval is predetermined by a setting value transducer which generates any selectable course of curve, and is inputted to a controller which is connected in front of the driver step for the power semiconductor; the controller receives a value, as an instantaneous value, corresponding to the actual potential or current applied at the electrodes; the interval has a time range of a few 100 ns to several minutes.