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A stepper or wafer stepper is a device used in the manufacture of integrated circuits (ICs). It is an essential part of the process of photolithography , which creates millions of microscopic circuit elements on the surface of silicon wafers out of which chips are made.
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 ...
A stepper is a device used in the manufacture of integrated circuits. Stepper may also refer to: Stepper motor, a type of electric motor; Wilhelm Stepper, Austro-Hungarian novelist (1899 – after 1941) Stepper (Transformers), a fictional character "Stepper", a song by Latto from 777 (2022)
Stepper motor From the plural form : This is a redirect from a plural noun to its singular form. This redirect link is used for convenience; it is often preferable to add the plural directly after the link (for example, [[link]]s ).
Ultratech Stepper, Inc., was founded in 1979 by Leo de Bos, located in Santa Clara, California. The product line consisted of 1x microlithography steppers, using a unique catadioptric lens design. Until 1992, Ultratech Stepper, Inc., was a subsidiary of General Signal. Previous presidents included Leo de Bos and George Rutland.
Movement of the common two step Lavet motor: (a) currentless stator, north pole of rotor points to the upper left, (b) energized stator, rotor moves clockwise, and north pole points to the right afterwards, (c) after energization of the stator has declined, rotor moves further until north pole points downright,
Stepper motors have some inherent ability to control position, as they have built-in output steps. This often allows them to be used as an open-loop position control, without any feedback encoder, as their drive signal specifies the number of steps of movement to rotate, but for this, the controller needs to 'know' the position of the stepper ...
The Enciclopedia Libre was founded by contributors to the Spanish Wikipedia who decided to start an independent project. Led by Edgar Enyedy, they left Wikipedia on 26 February 2002, and created the new website, provided by the University of Seville for free, with the freely licensed articles of the Spanish Wikipedia. [3]