  If an appropriate region of Kerr-Newman space-time is removed and suitable
identifications are made, the resulting space-time can be interpreted as an
infinitely thin disk producing the original electromagnetic and gravitational
fields. We choose the shape of the regions removed in such a way that radial
pressures in the disks vanish. Even the very inner parts such as ergoregions
may exist around the disks. The surface energy-momentum tensor of the disks is
checked to satisfy the weak and strong energy conditions. To emphasize the
reality of these sources two models of the disks are presented: (i) rotating
conductive charged rings which are supported against collapse by their internal
pressure, (ii) two counter-rotating streams of charged particles moving along
circular electro-geodesics. All these disk sources form a three-dimensional
parameter space with specific electric charge Q/M, angular momentum a/M and the
size of the excluded region being the parameters.
