品质因数

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品质因数

品质因数

The ratio of the inducta华硕x450vnce L to the resistance R of a coil remains constant for different winding arrang一海里等于多少公里ements in the 搞笑言情小说same volume and shape. It makes sense to define this value as a figure of me搬家rit to distinguish different coil structures. The quality factor Q is defined by th防火文件柜is ratio.

对于金融专业一个线圈，当婴儿黄疸怎么办圈数和形状相同时，在供热系统不同绕线排列的情况下，线圈电感L和电阻R的比值保持恒定不变。把这个值用来区分不同线圈的结构是非常有意义的。这个值就是品质因数Q。

the voltage, which is induced by t风车之国he same current in an inductor scales with the frequency f and thus t清理桌面he appa个性网站rent power in the device. The general definition of the quality factor is based on the ratio of apparent power to the power losses in a device. From this definition, the quality facto阿尔及尔的女人r of a coil results to:

在频率f下电流在电感中产生感应电压，进而可以输出视在功率。品质因数通常的定义是设备中视在功率和功率损耗的比值。由这个定义可以导出线圈的品质因数：

其中ω = 2πf:

The洗牌算法 quality factor Q can have a value between 0 and infinity, although it is difficult to obtain values far above 1000 for coils. For mass production you may expect values around运10 100. A quality factor below 10 is not very useful. These values have to be consid草履虫图片ered as the typical order of magnitude.

品质因数Q可十字军坦克以在0和无穷大之间取值，但对于一个线圈而言，很难取值到好茶1000以上。对于大批量生产，可以期望该值在1最新款游戏机00左右。当品质因数低于10时，线圈就基本上发挥不了应有的作用。上述值被作为典型的数量级。

For a fixed operating frequency, the quality factor Q is mainly dependent on the shape and size of the coil as well as the materials used. Quality factors are generally provided for standard coil techniques (e.g. wire-wound coils, PC聚丙烯酰胺凝胶电泳B coils).

当运行频率固定时，线圈的品质因数Q主要依靠于外形、尺寸和材料。品质因数通常由标准的绕线技术提供（例如：线绕线圈、PCB线圈）

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