连续可调的直流稳压电源设计

文档编号:DZXX362 文档字数:5837,页数:24

目   录
1 前言 4
2．总体方案设计 5
2.1 方案一 5
2.2 方案二 6
2.3方案选择 7
3．单元模块设计 7
3.1单元模块功能介绍 7
3.1.1辅助电源部分设计 7
3.1.2主要电源部分设计 9
3.1.3保护电路部分设计 9
3.1.4继电器驱动部分设计 10
3.1.5 输出电压比较部分设计 11
3.1.6 编码译码部分设计 12
3.2电路参数计算 12
3.2.1辅助电源参数计算 12
3.2.2主要电源参数计算 13
3.2.3元器件的选择 13
3.3特殊器件介绍： 13
3.4各单元模块连接 18
4．系统功能 18
5．设计总结 19
6 系统原理图 20
结 束 语 22
谢 辞 23
参考文献 24

【摘要】
 本文档主要阐述了稳压电源的设计流程。有电器的地方就有电源。所有的电子设备都离不开可靠的电源为其供电。现代电子设备中的电路使用了大量的半导体器件，这些半导体需要几伏到几十伏的直流供电，以便得到正常工作所必需的能源。这些直流电源有的属于化学电源，如采用干电池和蓄电池，但这些不能持久性的供电。大多数电子设备的直流供电方法都是将交流电源经过变压、整流、滤波、稳压等变换为所需的直流电压。完成这种变换任务的电源成为直流稳压电源。该方案是通过变压器变压，再经过整流电路、滤波电路进而将交流电变为直流电，在通过稳压器的稳压得到较稳定的电压，由于稳压器当输入电压固定时只能在它的电压差范围内调节输出电压，、所以要在调出电压差的范围时自动调档，这是通过两个比较器将输出电压和基准电压进行比较，再通过计数器的计数功能控制继电器控制器的输入情况来判断输出电压的大小在哪个范围，然后进行自动调档。最后将稳压器的输出电压流经保护电路，最后输出。
 
关键词： 整流   稳压   滤波    数控    电压源

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

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