Inductor is the important elements in electronic circuit design, widely used in filters, band-pass amplifiers and other high-frequency compensation circuit.
电感是电子电路设计中的重要元件，广泛应用在滤波器、带通放大器、高频补偿等各种电路中。
Taking nominal low-pass filter for example, presents necessary algorithmic formulae which can extend to non-nominal low-pass, high-pass and band-pans filters after some transformation.
以标称化的低通滤波器为例，给出有关的算法公式，这些公式经变换后可推广应用于非标称化的低通、高通及带通滤波器。
High-frequency band-pass filters(several hundred MHz) are used for Channel selection in telephone central offices.
高频带通滤波器（几百 MHz）用于电 话中心局的信道选择。
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