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StairMaster was founded by Lanny Potts, Jim Walker, and George Schupp and launched by Tri-Tech, Inc. of Tulsa, Oklahoma in 1983 at the National Sporting Goods Association trade show. The first piece of equipment, StairMaster 5000, was a rotating staircase machine. In March 1984 the StairMaster 5000 was replaced with the StairMaster 6000.
Lavet-type stepping motor of a quartz clock. A black rotor sprocket provides the mechanical output.. The Lavet-type stepping motor has widespread use as a drive in electro-mechanical clocks [1] and is a special kind of single-phase stepping motor.
A stepper motor, also known as step motor or stepping motor, [1] is a brushless DC electric motor that rotates in a series of small and discrete angular steps. [2] Stepper motors can be set to any given step position without needing a position sensor for feedback. The step position can be rapidly increased or decreased to create continuous ...
Photo: Shutterstock. Design: Eat This, Not That!Jumping onto the StairMaster can feel like a never-ending climb, but it's one of the most effective machines for burning calories and shedding pounds.
Brushless DC motors are widely used as servomotors for machine tool servo drives. Servomotors are used for mechanical displacement, positioning or precision motion control. DC stepper motors can also be used as servomotors; however, since they are operated with open loop control, they typically exhibit torque pulsations. [22]
A HP LaserJet 4000n printer. The LaserJet 4000/4050 and their respective variants were the first printers released in the 4000 series. The LaserJet 4000 series printers print letter paper at 17 pages per minute, and can be set to print at 600 dpi or 1200 dpi, although when set to print at true 1200 dpi, the printer runs at reduced speed.
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