交流电

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

微磁发器以移动中的磁铁或线圈，在路中造出感应交。

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

J0414交毫安表适用于中学、中专等实验室测量交路中的强度。

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交力测功机控稳定，可靠好，节效果显著，量反馈效率最高可达到74%。