PHYSICAL-MECHANISM OF CHAOS IN THYRISTORS AND COUPLED-TRANSISTOR STRUCTURES

Electronic chaos in thyristors ws observed by ac signal excitation of the anode of thyristors. The origin of this chaotic phenomenon ws reve aled by detailed measurement of the p-base potential, measurement with a coupled-transistor structure and the results of SPICE simulation. C haos was generated by the return-mapping nature in the variation of th e p-base potential. Chaotic behavior in a thyristor was also reproduce d in the experimental coupled-transistor structure and in the results of SPICE simulation.