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Speed control of DC motors is devoid from drift whilst remaining dynamic. The DC motor speed can be controlled from 0 rpm up to 150,000 rpm.

It’s an excellent way to learn about both PWM motor control and the use of 555 timers, all with a very low parts cost and readily available components. We’ve seen such setups before, used as ...

The MOSFET then modulates the 24V-dc motor-supply rail and thus generates a more-than-95%-efficient, programmable motor-speed control. The motor's armature inductance combines with flyback diode D3 to ...

Recently patented invention reduces speed ripple of dc motors caused by commutator bars and other motor characteristics. May give new life to old machines Adjustable-speed dc drives generally ...