本文推導不穩態多諧振盪器電磁干擾的理論公式並與實測值比較，結果相當吻合並獲結論：電磁干擾訊號其振福與頻率越大則干擾的雜訊越大，此結論也適用於雷射光訊號的電磁干擾。

Theoretical formulae are derived to model the time-domain and frequency-domain characteristics of the noise induced in an astable multivibrator by electromagnetic interference (EMI). The theoretical results are then compared with the experimental measurements. The experimental and numerical results reveal that the magnitude of the EMI-induced noise is related to the pulse height, the output load, the parasitic capacitance, the interference frequency and the interference amplitude. Moreover, it is shown that the harmonic noise increases with an increasing interference amplitude or interference frequency and the results of EMI are good agreements to the laser beam signal.