The magnetic speed controller controls the speed of boxes and plastic trays traveling on gravity…
http://www.controleng.com/single-article/magnetic-speed-controller/c3de9f1fd96e2eca0814420b43dff6c3.html
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The magnetic speed controller controls the speed of boxes and plastic trays traveling on gravity…
http://www.controleng.com/single-article/magnetic-speed-controller/c3de9f1fd96e2eca0814420b43dff6c3.html