This article allow to the reader appreciate a metho dology, about as design the control of current direct position servomecanismo ( CD) and how we will make it, using operational amplifiers and electronic ele ments easy to find and low cost. The development of this article have been tho ught for readers that have minimum knowledge in electronic but they have basic knowledge of Automatic Control. The controller PID will built at the end o f the article, it is applicable to some process of an entrance / an exit whose output signal is in the range from 0 to 5 volts of cd and the input signal to the proces s can be a sign from ‐12 to +12 volts of CD, 4 amperes.