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词汇 Current divider
分类 英语词汇 英语翻译词典
释义

Current divider

中文百科

电流分配定则

Figura 2: Divisor de corriente hecho con impedancias.
Figure 2: A low pass RC current divider
Figure 3: A current amplifier (gray box) driven by a Norton source (iS, RS) and with a resistor load RL. Current divider in blue box at input (RS,Rin) reduces the current gain, as does the current divider in green box at the output (Rout,RL)

电流分配定则（英语：Current divider rule），是指在并联电路中，各负载分到的电流的关系。

对于电压源电路
电源电压为各负载的电压降
V_e = V_1 = V_2 = \cdots = V_n
各阻抗流经的电流
I_n = \frac{V_n}{Z_n}
总电流
I_\mathrm{total} =\sum_{k=1}^n {I}_k = I_1 + I_2 + \cdots + I_n
总阻抗
Z_\mathrm{total} = \frac{V_e}{I_\mathrm{total}}
对于电流源电路
总电流
I_\mathrm{total} =\sum_{k=1}^n {I}_k = I_1 + I_2 + \cdots + I_n
总阻抗
\frac{1}{Z_\mathrm{total}} = \frac{1}{Z_1} + \frac{1}{Z_2} + \cdots + \frac{1}{Z_n}
各分路电流
I_\mathrm{n} = \frac{Z_\mathrm{total}}{Z_n} \cdot I_\mathrm{total}
在只有2个电阻的并联电路里，相关计算公式可以简化为：
总电阻
R_\mathrm{total} = \frac{R_1 \cdot R_2}{R_1+R_2}
各分路电流
I_1 = \frac{R_2}{R_1+R_2} \cdot I_\mathrm{total}
I_2 = \frac{R_1}{R_1+R_2} \cdot I_\mathrm{total}
英语百科

Current divider 电流分配定则

Figure 1: Schematic of an electrical circuit illustrating current division. Notation RT. refers to the total resistance of the circuit to the right of resistor RX.
Figure 2: A low pass RC current divider
Figure 3: A current amplifier (gray box) driven by a Norton source (iS, RS) and with a resistor load RL. Current divider in blue box at input (RS,Rin) reduces the current gain, as does the current divider in green box at the output (Rout,RL)
Figure 4: Current amplifier as a bilateral two-port network; feedback through dependent voltage source of gain β V/V

In electronics, a current divider is a simple linear circuit that produces an output current (IX) that is a fraction of its input current (IT). Current division refers to the splitting of current between the branches of the divider. The currents in the various branches of such a circuit will always divide in such a way as to minimize the total energy expended.
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