  The study of topological states has developed rapidly in electric circuits,
which permits flexible fabrications of non-Hermitian systems by introducing
non-Hermitian terms. Here, nonreciprocal coupling terms are realized by
utilizing a voltage follower module in non-Hermitian topological electric
circuits. We report the experimental realization of one- and two- dimensional
non-Hermitian skin interface states in electric circuits, where interface
states induced by non-Hermitian skin effects are localized at the interface of
different domains carrying different winding numbers. Our electric circuit
system provides a readily accessible platform to explore non-Hermitian-induced
topological phases, and paves a new road for device applications.
