  The transfer of topological concepts from the quantum world to classical
mechanical and electronic systems has opened fundamentally new approaches to
protected information transmission and wave guidance. A particularly promising
technology are recently discovered topolectrical circuits that achieve robust
electric signal transduction by mimicking edge currents in quantum Hall
systems. In parallel, modern active matter research has shown how autonomous
units driven by internal energy reservoirs can spontaneously self-organize into
collective coherent dynamics. Here, we unify key ideas from these two
previously disparate fields to develop design principles for active
topolectrical circuits (ATCs) that can self-excite topologically protected
global signal patterns. Realizing autonomous active units through nonlinear
Chua diode circuits, we theoretically predict and experimentally confirm the
emergence of self-organized protected edge oscillations in one- and
two-dimensional ATCs. The close agreement between theory, simulations and
experiments implies that nonlinear ATCs provide a robust and versatile platform
for developing high-dimensional autonomous electrical circuits with
topologically protected functionalities.
