Abstract This paper focuses on solid component separation from flowing gases by alternating current (AC) electric field. Separators are often used for solid and liquid aero dispersing component separation by direct current (DC) electric field. A high voltage transformer and high voltage rectifier is used to generate DC electric field. The semiconductor rectifier is error prone mainly after random flashovers that usually occur in separators. This fact and also the fact that DC high voltage separators get lower separability if the components have very low or very high specific resistance can be considered as a disadvantage. Macroscopic particles dispersed in the area of electrode with corona caused by connected AC high voltage are not charged as supposed [1]. Therefore it is necessary to prepare electro-physical conditions for mono-polar electric charge generation near electrode with corona. One of the possibilities represents exploitation of the physical effect on metal – dielectric – gas boundary. Therefore a separator model was created with corona metal electrodes and collector electrode with insulation barrier. For electric AC separator, movement equations were deduced for charged particle movement in AC electric field. Electric field was mapped in space between electrodes. Various electrodes with corona and separator models were designed. First measurements focused on U/I characteristics. Afterwards the separability was tested for all separator types and for various component types in flowing air. It was shown that it is possible to effectively separate solid particles from flowing gases also in AC electric field on model created.