HIGH FREQUENCY CHAOS IN DIODE RESONATOR AND ITS CONTROLS

Abstract

The chaotic dynamics of different diodes (1N4007, 1N4148, green light emitting diode and zener diode) in R-LD circuit (R=1k Ohm, L=100mH) is studied at higher frequencies (1.6kHz-20kHz) and constant input voltage (3Vp-p). A
novel but simple technique is shown to measure diode reverse recovery time based on its chaotic dynamics. The
experimental outputs of R-L-D circuit are found in agreement with the PSPICE model simulation, except in 1N4148. The
chaos involved is confirmed by the bifurcation plot and Lyapunov exponents. This technique could facilitate the
fabrication of fast and ultrafast diodes. Finally, two simple but elegant experimental methods are demonstrated to control
chaos in R-L-D circuit