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10秒装修报价 装修要花多少钱?获得精准报价,省钱30%
168211
元
材料费:77201元
人工费:86544元
设计费:1760元
质检费:2706元
1000W自动调压交流稳压电源电路如下图所示,其工作原理:T为自耦式调压器。其输出端固定,输入端由伺服电动机自动调节,使输出保持恒定。三极管VTl、VT2:3DK9C,β
65~85;VT3:3AX818,β
60~80;二极管VD2、VD3、VD6~VD9:1N4002;VD4、VD5、VD10:1N4148;VD11:IN4001;发光二极管VD1:BT304;稳压二极管VD12:2CW119;电容C1:lμF400V;C2、C3:0.1μF250V;C4、C5:220μF25V;C6:470μF50V;C7、C8:47μF50V;电阻Rl:10kΩ;R2、R7:510Ω;R3、R6:2.7kΩ;R4:470Ω;R5:51Ω;电阻标称功率除电阻Rl选用大于3W功率外,其他均选用1/2~1/4W金属膜电阻;电位器RPl、RP2:1kΩ;继电器Kl~K3:JRK-13F;交流接触器KA:522;伺服电动机M:ND-D;电压表PV:85L1-0~250V;开关S1KN3;S2:KN-2W1D;保险管FU:BGOPΦ6-5A。
一般稳压概念设计都是。――★1、【概念一】:“用LM317做一个稳压电源”,那么“稳压电源”的主要性能就是稳定的电压输出。楼上的两位朋友提供的电路,就可以满足要求。――★2、【概念二】:“主要是电流怎么确定”......用LM317做稳压电源,他的电流输出能力可以达到1A(金属封装的输出能力可以输出1.5A)。――★3、【概念三】:“怎么设置让我的最大输出电流不大于800MA”......稳压电源提供的是电压稳压的输出,而电流则由负载来决定。――★4、“选取整流二极管提供数据依据”......因为LM317做稳压电源的最大输出电流为1A,这就是依据:桥式整流二极管选择常用的1N4007即可,1N4007可通过1A的电流,桥式整流输出最大可达2A。――★5、关于散热器:LM317做稳压电源,属于串联式稳压电源,它的功率消耗和输入电压有关,输入电压越高、LM317的功率消耗就越大。要根据情况安装散热器,散热器安装在LM317上。