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Electric dc motor

At the most basic level, electric motors exist to convert electrical energy into mechanical energy. This is done by way of two interacting magnetic fields --one stationary, and another attached to a part that can move. A number of types of electric motors exist, but most BEAMbots useDC motors1 in some form or another.DC motors have the potential for very high torque capabilities (although this is generally a function of the physical size of the motor), are easy to miniaturize, and can be "throttled" via adjusting their supply voltage.DC motors are also not only the simplest, but the oldest electric motors.

The basic principles of electromagnetic induction were discovered in the early 1800's by Oersted, Gauss, and Faraday. By 1820, Hans Christian Oersted and Andre Marie Ampere had discovered that an electriccurrent produces a magnetic field. The next 15 years saw a flurry of cross-Atlantic experimentation and innovation, leading finally to a simpleDC rotary motor. A number of men were involved in the work, so proper credit for the firstDC motor is really a function of just how broadly you choose to define the word "motor."