Input frequency

In power supply circuits and similar systems, this refers to the frequency of the AC voltage applied to the input terminals. The input frequency is an important factor in determining the output when the power supply circuit includes coils and capacitors. Therefore, it is necessary to apply a voltage with a frequency that falls within the rated range of the power supply circuit. If the frequency of the input voltage deviates from the specified value, it may cause malfunction or failure of the power supply circuit or the load, so caution is required. In addition, if a large amount of high-frequency noise is present in addition to the fundamental sine wave, it may also cause failure or malfunction, so care must be taken.