An experimental study of dielectric barrier discharge operated under a pulsed radiofrequency (RF) regime is presented. Various systems are compared in atmospheric pressure helium. The effect of different power sources and different matching networks on electrical and optical behaviour of the discharge are compared. Results are analysed according to positive and negative feedback. Furthermore, optical diagnostic shows that the region with the most dissipated energy varies with the power sources and the electrode length. Insights are given on the kind of discharges that would be optimal for thin film coating.