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Motor Speed Control Basic Training


This video describes in basic terms how the various types of motor speed controls work. SCR, PWM, AC VFD, brushless DC and Digital Closed Loop are all covered in this session, with the goal of establishing for the viewer a fundamental understanding of how each control type works, the advantages/disadvantages of each, and why one may … Continued

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Long Live Direct Current Motors


Reports of the death of DC motors and drives “have been greatly exaggerated” (to borrow from a well-known writer). For over 30 years, industry pundits have been predicting the demise of the DC motor/drive market, in favor of AC. Yet DC stubbornly clings to life. A DC drive is a direct-current motor speed control system. … Continued

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