The multivalued current–voltage characteristics in the tunnel diodes

The perturbation of external high frequency signals on dynamical current–voltage (I–V) characteristics of tunnel diodes has been investigated experimentally alongside the interaction between the applied signal and the intrinsic frequencies of diodes. The multivalued I–V characteristics, intrinsic bistabilities, regions of frequency lock and amplification, as well as regions of chaotization and ordering of systems have been found.