如何用电源等效变换求电流i,
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如何用电源等效变换求电流i,
![](http://img.wesiedu.com/upload/5/f2/5f2e704550b4f07e6ece4f04534053a7.jpg)
![](http://img.wesiedu.com/upload/5/f2/5f2e704550b4f07e6ece4f04534053a7.jpg)
![如何用电源等效变换求电流i,](/uploads/image/z/15008042-2-2.jpg?t=%E5%A6%82%E4%BD%95%E7%94%A8%E7%94%B5%E6%BA%90%E7%AD%89%E6%95%88%E5%8F%98%E6%8D%A2%E6%B1%82%E7%94%B5%E6%B5%81i%2C)
从左往右依次变化电源性质,同时合并同类电源:
Is1 = 12/3 = 4 A ,R1 = 3Ω ;等效成电流源.
Is2 = 4 + 2 = 6 A ,R2 = 3 // 6 = 2Ω ;合并电流源.
Us3 = 6 * 2 = 12 V, R3 = 2 + 2 = 4 Ω ;等效成电压源,合并电阻.
Is4 = 12/4 = 3 A,R4 = 4 Ω ;等效成电流源.
Is5 = 4/2 = 2 A ,R5 = 2Ω
Is6 = 3 + 2 = 5 A ,R6 = 4 // 2 = 1.333 A ;合并电流源.
I = 5 * 1.333 / (1 + 1.333) = 2.857 A ;并联电阻反比例分流.
Is1 = 12/3 = 4 A ,R1 = 3Ω ;等效成电流源.
Is2 = 4 + 2 = 6 A ,R2 = 3 // 6 = 2Ω ;合并电流源.
Us3 = 6 * 2 = 12 V, R3 = 2 + 2 = 4 Ω ;等效成电压源,合并电阻.
Is4 = 12/4 = 3 A,R4 = 4 Ω ;等效成电流源.
Is5 = 4/2 = 2 A ,R5 = 2Ω
Is6 = 3 + 2 = 5 A ,R6 = 4 // 2 = 1.333 A ;合并电流源.
I = 5 * 1.333 / (1 + 1.333) = 2.857 A ;并联电阻反比例分流.