Abstract: Influences of the input AC wave shape and amorphous ribbon number on magnet-inductive effect and rangeability of magnet-inductive effect of the Fe73.5Cu1Nb3Si13.5B9 amorphous ribbons were studied. When the input voltage was sinusoidal AC voltage, the repeatability of rangeability of the magnet-inductive effect and stability of the temperature and humidity were studied. The results show that the magnet-inductive effect increased with the increase of ribbon number, while decreased with the increase of magnetic field intensity and the one with sinusoidal AC voltage was stronger than that with triangle AC voltage. The rangeability of magnet-inductive effect decreased with the increase of amorphous ribbon number, and the sinusoidal AC voltage and triangle AC voltage changed under different frequencies. When the input voltage was sinusoidal AC voltage, the error of non-repeatability of the rangeability of magnet-inductive effect was very small, and was hardly influenced by the temperature and humidity.