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。
2
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。
3
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.