INVESTIGATION INTO TIME- AND FREQUENCY-DOMAIN EMI-INDUCED NOISE IN BISTABLE MULTIVIBRATOR

Electromagnetic interference (EMI) has a negative efiect upon the performance of circuit communication systems. The present study considers the case of EMI induced in a conducting wire, and derives equations to establish the efiect of the EMI on a bistable multivibrator. The validity of the equations is verifled experimentally. The results indicate that the degree of in∞uence of the EMI on the bistable oscillator depends on the interference power, the interference frequency, the induced power, the output resistance of the circuit, and the parasitic capacitance. Moreover, it is shown that the harmonic noise increases with an increasing interference amplitude and frequency. The theoretical results are found to be in good agreement with the experimental data.