A cooling arrangement comprising a source electrode, a first and a second target electrode arranged at a distance from the source electrode and control circuitry for controlling a voltage being applied between the source electrode and at least one of the first and the second target electrodes. The voltage is controlled such that an airflow resulting from a potential difference between the source electrode and at least one of the first and the second target electrodes is arranged to have alternating directions. By means of the invention it may be possible to provide cooling of a device having similar or better performances than a conventional heat sink and fan system, but with a smaller size and weight as well as being silent.