A Kind of Soft Started Regulated Power Supply

Abstract

The regulated power supply (the stabilized voltage supply) is an important device that can provide alternating current (AC) or direct current (DC) to various electronic equipment. At present, it can be used in most electronic devices and instruments. We need to use the direct current stabilized power it provided to make the equipment work normally. The AC power grid provides voltage with the effective value of 220V and the frequency of 50Hz. We need to use the regulated power supply to convert the power into stable direct voltage with a specific amplitude, so that the power can be applied to all kinds of appliances in our life. This paper studies the soft start voltage stabilizing circuit based on the integrated circuit LM317 through the simulation software of Multiuse. The whole power circuit is mainly composed of the transformer, the filter circuit, the rectifying circuit and the voltage stabilizing circuit. This kind of power supply has the advantages of small size, good stability and high cost performance. This paper mainly introduces the principle of the regulated power supply and how to realize it, and further analyses the working principle of specific hardware circuits and specific methods to realize their functions. After many times of simulation in the software, it is found that the power supply designed in this paper has flexible adjustability as well as good control effect. Therefore, this kind of power supply can be more widely used in electronic instruments, measuring instruments, other electronic control circuits and other occasions. According to the results, the function and index of this soft started regulated power supply circuit with the load function can meet the requirements of this experiment.