可调直观式直流稳压电源设计方案

Design of Adjustable and Visible DC Power Supply

本文设计一个可调可直观显示的直流稳压电源,电路采用三端可调式集成稳压器LM317等元件,构成从0V～20V连续可调的稳压电源电路,同时利用模数(A/D)转换,单片机控制电路,通过译码驱动,实现在数码管上直观显示瞬时电压数值。具有设计电路简单,制作容易,操作方便,显示直观,性能可靠,功能完善等特点。

This paper is to design a visible and adjustable DC power supply. The circuit uses three-adjustable integrated regulator LM317, making up of a continuous-tuning power supply circuit fi＇om 0V-20V. It uses the Module （A/D） converter, the MCU control circuit to display the instantaneous voltage values in numeral tube. It has the characteristic of simple circuit design, easy facture, convenience operation, intuitionistic display, reliable performance, perfect functions, etc.