The problem of modern powder suppliers is that the advanced features are associated with high cost. Such advanced power suppliers are not accessible to citizens with average incomes. The primary objective of the diploma thesis was thus, to create an affordable, digitally controlled, laboratory power supply, which allows the operator to control the output voltage, between 0 V and 24 V, and the load current between 0 A and 3 A.
Here, in this diploma thesis, we identify the general advantages and disadvantages of lower and high priced power supplies, presents the theoretical operation of a general stabilized linear power supply and its components. We describes, the design of the hardware component, printed circuit board using the software tool Altium Designer, present a detailed description of the microcontroller program. Finally we characterize the functional properties of the power supply and presents specific technical solutions intended to improve the functionality of the device.