稳压电源的设计与制作-毕业设计

稳压电源的设计与制作

学生：XX 指导教师：XX

摘要：随着电子技术的高速发展，电子系统的应用领域越来越广泛，电子设备的种类也越来越多，电子设备与人们的工作、生活的关系益密切。任何电子设备都离不开可靠的电源，它们对电源的要求也越来越高。特别是随着小型电子设备的应用越来越广泛，也要求能够提供稳定的电源，以满足小型电子设备的用电需要。本文基于这个思想，设计和制作了符合指标要求的开关稳压电源。

开关电源具有高频率、高功率密度、高效率等优点, 被称作高效节能电源。由于开关稳压电源具有这些优点，基于这个思想设计了一个1～5V可调的低功率开关稳压电源，以满足小型电子设备的供电需要。

本文以开关电源的发展历史、发展现状以及发展趋势为线索，介绍了开关电源的一些新技术，技术指标，分类标准等。并根据这些标准设计了一种满足小型电子设备供电需要的开关稳压电源。电源设计的主要指标是：输入电压为AC220V，输入频率为50HZ，输入电压范围为AC165V～265V，输出电压为直流1～5V可调，输出最大电流为150mA，输出最大功率为2.25W。

最后在完成基本指标的基础上，本文还增加了防浪涌电流的附属功能，使电路更加满足小型电子设备的用电需要。

数控直流稳压源就是能用数字来控制电源输出电压的大小，而且能使输出的直流电压能保持稳定、精确的直流电压源；本文介绍了利用数/模转换电路、辅助电源电路、去抖电路等组成的数控直流稳压电源电路，详述了电源的基本电路结构和控制策略；它与传统的稳压电源相比，具有操作方便、电压稳定度高的特点，其结构简单、制作方便、成本低，输出电压在1～5V之间连续可调，其输出电压大小以1V步进，输出电压的大小调节是通过“＋”“－”两键操作的，而且可根据实际要求组成具有不同输出电压值的稳压源电路。该电源控制电路选用89C51单片机控制主电路采用串联调整稳压技术具有线路简单、响应迅速、稳定性好、效率高等特点。详细分析了电源的拓朴图及工作原理。

关键词：稳压电源单片微型机数控直流 D/A转换

Voltage-stabilized source design and manufacture Abstract:With the rapid development of electronic technology, the application field of electronic system is more and more extensive, electronic equipment type more and more, electronic equipment and people's work and life of PE close relationship. Any electronic equipment is inseparable from the reliable power supply, they to the requirements of the power supply more and more is also high. Especially with the small electronic equipment used more widely, also be able to provide stable power supply, small electronic equipment to meet the need of power. This paper based on this idea, design and production of it in accordance with the requirements of the index of switching power supply.

Switching power supply has the high frequency and high power density, high efficiency and other advantages, known as high efficiency and energy saving power. Because of a switching power supply has these advantages, based on the thought design a 1 ~ 5 V adjustable low power switching power supply, small electronic equipment to meet the need of the power supply.

In this paper the development history of the switch power development, the present situation and development tendency for clues, this paper introduces some new technology of switch power supply, technical index, classification standard etc. And according to these standards designed a small electronic equipment to meet the power of a switching power supply. The major indexes of the power source design is: input voltage for AC220V, input frequency for frequency 50 HZ, input voltage range for AC165V ~ 265 V, the output voltage for dc 1 ~ 5 V adjustable, output maximum current for 150 mA, the most high power output for 2.25 W.

Finally in complete basic indicators, and on the basis of this paper also increased the surge current of subsidiary function, make circuit more satisfying the power of the small electronic equipment needs.

Numerical control dc voltage source is digital to control power supply can the size of the output voltage, and to make the output voltage can remain stable, precise dc voltage source; This paper describes the use of several/mode conversion power circuit, auxiliary power supply circuit, to shake the composition such as circuit of the numerical control dc stabilized voltage power