Laboratorní úlohy s časovačem NE 555.

Abstract

This bachelor thesis deals with the comparison of the basic properties of bipolar and CMOS timers based on the NE 555 base. The work also provides an insight into the foreign and domestic offer of these timers. In the next part, the principle of operation of the elementary connections of DC/DC converters was explained, from which the implementation part is based. For selected timers from the Czech distribution, their parameters were accurately measured and compared with catalog ones. The final part is the implementation of DC/DC voltage converters with a specific timer used in the previous measurement. The work in this part deals with the design of step-up and step-down voltage converters. The function of the individual circuits is verified by means of load characteristics measured for different switching cycles.