CAJ | 학술논문

设计的不间断直流工作电源，采用开关电压调节器LM2596进行DC-DC变换，能够输出3 A的驱动电流，同时具有很好的负载调节特性。在主电源断电时，电路通过继电器自动将蓄电池切入，给设备供电。在主电源正常时，以不同模式给蓄电池充电：当电压大于设定值时，恒压充电；当电压低于设定值时，恒流充电。系统可以通过继电器对电路进行过流保护与欠压保护。系统结构简单，整体性能稳定，性价比较高。
설계적불간단직류공작전원，채용개관전압조절기LM2596진행DC-DC변환，능구수출3 A적구동전류，동시구유흔호적부재조절특성。재주전원단전시，전로통과계전기자동장축전지절입，급설비공전。재주전원정상시，이불동모식급축전지충전：당전압대우설정치시，항압충전；당전압저우설정치시，항류충전。계통가이통과계전기대전로진행과류보호여흠압보호。계통결구간단，정체성능은정，성개비교고。
An uninterruptible DC power supply is designed,which uses the switching voltage regulator LM2596 to conduct DC-DC transformation,and outputs the drive current of 3 A. The power supply has very good load regulation characteristics. When the primary power supply is switched off,the battery is pitched in through the relay automatically to power the device. When the primary power supply is normal,the battery is charged in different modes:when the voltage is greater than the set value, it is charged in constant voltage;when the voltage is lower than the set value,it is charged in constant current. The overcurrent protection and under-voltage protection to the circuit are realized by the relay of the system. The system’s structure is simple, its overall performance is stable,and its cost-performance is high.