The speed and braking control of moving systems are vital engineering problem. The goal of this study, is to solve this problem by using magnetic braking and speed stabilization with eddy currents. In this study, magnetic circuit was designed to control the speed and brake of the dc motor. Maxwell which is the analysis software of magnetic circuits was used to design this circuit. Firstly, computations and analysis were done by Maxwell software. Then, magnetic circuit was designed depending on the Maxwell analysis results. A setup mechanism was developed for experiments. According to experimental results on this setup, it was shown that the magnetic circuit was correctly designed. Due to usage of this model, it was aimed to prevent energy loses caused by friction.