The bidirectional high frequency electronic control unit with energy recovery and aided by microprocessor type 4QHF 2D has been added to the newest range. Conceived for permanent magnet motors and realized in compliance with the most recent security provisions for the application on EC-vehicles, it is produced in a wide power range (from 45 A up to 140 A). This control I unit is provided with a variable regenerative braking that can be adjusted by the operator according to his needs and acts during the vehicle s deceleration, reverse and by pedal release.