3D model of the AT brushed electric motor/alternator. This device can generate either mechanical movement (rotation) or electricity; depending on which of the two is supplied to the device. 2 versions are modeled; the left one is a DC-version (uses a commutator), the right one is an AC-version (uses slip rings). See the 'Purchasing_the_models' link at appropedia's AT_CAD_Team for additional information on the model