This project is about design and implementation of a single phase fully controlled bridge rectifier with digital control using PIC microcontroller. In order to advance in the control of thyrirstors is presented this type of control which is realized through a microcontroller of low gamma. In addition in this work is also presented the design of an analog control of type cosine with the purpose of comparing both circuits of digital control an analog cosine control. This work focuses on the control of thyristors through an algorithm of control designed in embedded C language and implemented on PIC microcontroller of low gamma.