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单词 Line impedance
释义

Line impedance

英语例句库

In this paper,the operation margin of mho relays(zone 3 impedance relays) is equivalently redefined as function of bus voltages instead of line impedance.

研究了距离三段保护的动作性能,将其动作裕度定义为两端节点电压的函数。

中文百科

阻抗匹配 Impedance matching

(重定向自Line impedance)

阻抗匹配(Impedance matching)是微波电子学里的一部分,主要用于传输线上,来达至所有高频的微波信号皆能传至负载点的目的,几乎不会有信号反射回来源点,从而提升能源效益。

大体上,阻抗匹配有两种,一种是透过改变阻抗力(用于集总参数电路),另一种则是调整传输线的波长(用于传输线)。

要匹配一组线路,首先把负载点的阻抗值,除以传输线的特性阻抗值来归一化,然后把数值划在史密夫图表上。

英语百科

Impedance matching 阻抗匹配

(重定向自Line impedance)
Source and load circuit impedance
L networks for narrowband matching a source or load impedance Z to a transmission line with characteristic impedance Z0. X and B may each be either positive (inductor) or negative (capacitor). If Z/Z0 is inside the 1+jx circle on the Smith chart (i.e. if Re(Z/Z0)>1), network (a) can be used; otherwise network (b) can be used.[3]
Coaxial transmission line with one source and one load
Typical push–pull audio tube power amplifier, matched to loudspeaker with an impedance-matching transformer

In electronics, impedance matching is the practice of designing the input impedance of an electrical load or the output impedance of its corresponding signal source to maximize the power transfer or minimize signal reflection from the load.

In the case of a complex source impedance ZS and load impedance ZL, maximum power transfer is obtained when

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更新时间:2025/6/16 23:18:51