  We study Hawking radiation as a phenomenon of tunneling through event
horizons of charged torus-like as well as dilaton black holes involving
cosmological constant based on Kerner and Mann's formulation. We obtain
tunneling probabilities as well as Hawking's emission temperature of outgoing
charged particles by applying the semiclassical WKB approximation to the
general covariant Dirac equation. The graphical behavior of Hawking temperature
and horizon radius is investigated. We find results consistent with those
already given in literature.
