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'''Braking choppers''', sometimes also referred to as '''braking units''', are used in the DC [ ...y to a [[resistor]] where the braking energy is converted to heat. Braking choppers are automatically activated when the actual DC bus voltage exceeds a specif ...

Various refinements in the shape have been called choppers, discoids, polyhedrons, subspheroid, etc. To date no reasons for the varian ...e edge, from which use they were given the name of [[Chopper (archaeology)|choppers]]. Modern science has been able to detect mammalian blood cells on Mode 1 t ...

...h could be used as tools, primarily in the form of [[chopper (archaeology)|choppers]] or [[scraper (archaeology)|scrapers]].<ref name="ea_archaeology">{{cite w ...