交流电

The electro-magnetic microgenerator utilizes a moving magnet or coil for inducing an alternating electric current in a circuit.

微型磁发器以移动中磁铁或线圈，在路中制造出感应。

AC Milliammeter, Model J0414, is suitable for the laboratories of middle schools and polytechnic schools to measure current intensity in the AC circuit.

J0414型毫安表适用于中学、中专等实验室测路中强度。

The result shows that CJD alternating current electrodynamometer has simple structure and the energy feedback efficiency can reach 74%, with outstanding energy-saving effect, good control stability.

运行结果表明，该CJD力测功机控制性能稳定，可靠性好，节能效果显著，能反馈效率最高可达到74%。