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在稳恒电路中,无论电路图多么复杂,只要电源的参数和电阻已知,都可以基于欧姆定律和基尔霍夫定律,求得各支路电流。当电路中的支路较多时,计算量很大。此时,可考虑用等电势法简化电路,画等效电路图,明确电阻间的串联、并联关系,有助于减少运算量,提高解题的速度和准确率。对于混联电路中电功率的求解问题,尤其是动态功率极值的问题,若直接计算,涉及的物理量较多,函数表达式较复杂,可以考虑将电路中电源及与之串联、并联的线性元件一起等效为单一电源,使问题简
In steady circuits, no matter how complicated the circuit diagram is, the current of each branch can be obtained based on Ohm’s law and Kirchhoff’s law as long as the parameters and resistance of the power supply are known. When the circuit in the branch more, a large amount of computation. At this point, you can consider the use of equal potential method to simplify the circuit, draw the equivalent circuit diagram, a clear resistance between the series, parallel relationship, help to reduce the amount of computation and improve the speed and accuracy of the problem-solving. For the solution of the electric power in the hybrid circuit, especially the problem of the dynamic power extremum, if the direct calculation involves more physical quantities and the expression of the function is more complicated, the power supply in the circuit and the linear elements connected in series and in parallel can be considered Equivalent to a single power supply, so that the problem is simple