稳流电源通常采用双层绕组。线圈的有效部分包含左、右两个有效边。将稳定的电压源加在固定的电阻的两端，那么流过电阻的电流一定是恒定的，这是设计稳流电源的基本原理和思想。(Current stabilized power supply usually uses double windings. The valid part of the coil contains two valid sides, left and right. If a s