In this thesis, the topologies for generating sinusoidal voltage and current from DC sources by using the pulse-width modulation (PWM) and transistor bridge were studied. Methods for regulating single-frequency sinusoidal current sources were also studied and their advantages and disadvantages were discussed. A model of a transistor full-bridge was developed in MATLAB Simulink program package, along with output filter and three-phase current measurement using the Simscape library, and PI and PR controllers and PWM modulators were realized by using standard Simulink blocks. The one-phase hardware solution was developed, based partially on the Simulink model, and the hardware solution was divided into two printed circuit boards. The first printed circuit board contains a full transistor bridge with a control circuit and an output filter, while this energy part is also galvanically isolated from the board with microcontroller and amplifiers. The second printed circuit board have connectors for STM32F4 Discovery development system, reference voltage for analogue-to-digital converter and amplifiers for measuring current and voltage on the load. Software for current regulation for the development system was developed, where the proportional-resonant controller is used for current regulation. The results obtained by experimental verification in laboratory conditions were presented.