多频率电火花计时器是教学实验用计时器，可以把物体运动情况定时的记录在普通纸带上。配合斜面小车、电火花描迹仪、轨道小车、二维空间-时间描迹仪、钩码组等实验仪器，可以做匀速直线运动、匀加速直线运动、牛顿第二定律、动能定理、自由落体运动、平抛运动、斜抛运动、单摆运动规律、机械能守恒定律等多个实验.
J0207 Multi-Frequency Electrical Discharge Timer
It is a teaching experiment with timer timer, you can object to the movement of records from time to time in the ordinary on paper tape. With car ramps, electric spark hodoscope, car track, two-dimensional space - time hodoscope, hook, and other experimental instruments keys group, you can do uniform linear motion, even speed up the linear motion, Newton's second law, the kinetic energy theorem, free-falling Campaign-behind campaign, left oblique movement, the law of pendulum movement, the law of conservation of mechanical energy and other experiments.