【摘要】 本文描述了一种利用FFT,从介质吸收电流得出其超低频介电频谱的新方法。利用静电计测量吸收电流,所得的频谱范围为10^-5～1Hz。利用IEEE-488接口所制成的数据测量系统可自动完成数据的采集和频谱计算。对PVC+1.5％CPE试样所作的测量表明此方法是可行的。更多还原

【Abstract】 A new method,which the ultra low frequency dielectric spectroscopy can be obtained by the absorption current with FFT,was established.Using an electrometer for the measurement of absorption current,the range of the spectroscopy is from 10-5 to 1 Hg The measuring system with IEEE-488 interface can perform the data collection and the spectroscopy calculation automatically.For the sample of PVC+1.5% CPE,the measurement of the spectroscopy proved that this method was successful.更多还原