The effective resistance is the parallel combination of the source resistance and the feedback (or shunt) sensing resistance.

有效电阻为源电阻和反馈(或分流)取样电阻的并联组合。

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Rectifier diodes cannot be used directly in parallel, because the diode heat resistance have differences, will reduce the reliability, it is better to a set of current of diode.

整流二极管不可直接并联使用，因为二极管的热电阻有差异，会使可靠性降低，最好用一组电流大的二极管。

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The output power mechanism of a separately excited DC motor can be equivalent to a variable resistance, which is parallel with the armature winding of the motor.

若将他励直流电动机输出功率的机理等效为一个与电动机电枢绕组并联的可变电阻，可以得到他励直流电动机可变电阻型等效电路图。

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