Abstract: This paper described the power supply design process. With electrical appliances, there is the power supply. All electronic equipment is essential for reliable power supply. Modern electronic equipment in the circuit using a large number of semiconductor devices, semiconductor volts to a few tens of volts of DC power, in order to obtain required by the normal energy. Some of these chemical DC power supply, such as batteries and used batteries, but these can not be sustained in power. Most of the DC power electronic equipment will be methods are the AC power transformer rectifier, filter, regulator, etc. transform the required DC voltage. Completion of this task transform power into DC power supply. The programme through the transformer transformer, through the rectifier circuit filter circuit which will be AC into DC, and the adoption of the regulation by regulators more stable voltage, input voltage regulator when it can only be fixed when the voltage difference within the scope of regulation of the output voltage, and therefore out of voltage difference in the scope of automatic Diaodang, it is through the two comparator output voltage and the reference voltage comparison, and through the counter counting function control relay controller The input to determine the size of the output voltage at which the scope, and then automatically Diaodang. Finally,the regulator output voltage protection circuit through final output.
Key words: Rectifier Regulators Filtering NC Voltage Source
