坛主看看这种会不会稳定点？

这种会不会更稳定点？

不会，电阻内置没有用，发热还是要发热，况且接的等太少，没有使用价值

路过，顶一下~~~~~~~~~~~~~~

[whitepad]***400;200;400,200;;** m38,27 l38,29,41,35,42,39,44,45,46,48,48,54,48,56,49,59,51,63,51,62 e|********* m51,34 l51,33,52,32,56,32,62,30,69,28,76,27,84,25,91,24,98,22,103,21,105,19,107,19,108,18,108,25,107,27,104,30,102,34,100,39,96,43,93,48 92,51,90,53,88,54,87,54,87,53,86,53 e|********* m55,57 l84,57,85,56,82,56 e|********* m68,65 l68,70,69,74,69,123,68,122,67,119 e|********* m71,99 l75,96,77,95,79,93,85,91,87,90,90,90,91,89,89,89,86,92,81,93,78,95 e|********* m46,99 l46,100,48,103,49,105,50,108,51,114,51,131,50,133,49,134,49,135,45,135 e|********* m34,138 l77,138,86,134,95,131,105,125,107,123,107,122,96,122,95,123 e|********* m167,18 l165,19,162,23,157,29,151,34,144,40,134,45,127,50,122,53,120,55,119,55,125,54,133,53,144,51,156,49,184,49,185,50,185,57,182,59,179,63,174,66 168,68,162,71,155,73,147,75,140,79,133,81,129,82,127,82,127,81,126,80,126,75 e|********* m136,68 l140,68,145,70,149,71,155,73,160,75,164,76,167,77,169,78,170,79,169,79 e|********* m135,95 l135,96,133,100,133,105,135,106,149,106,151,103,155,102,159,100,161,98,161,95,153,87,150,85,146,83,143,83,142,85,140,86,138,88,134,90,131,90 e|********* m230,78 l233,78,239,75,246,73,258,69,278,62,302,56,321,51,338,45,352,41,362,38,365,36,362,36 e|********* m322,23 l322,27,324,32,325,41,326,49,328,58,332,68,332,99,331,101,319,101,316,100,313,98,310,95,308,94,307,92,306,92,306,91 e|********* m314,82 l315,82,315,84,314,84 e|********* m260,30 l261,30,261,85,260,88,257,90,256,93,252,97,249,99,247,100,244,101,240,101,240,100,254,100,259,102,261,105,265,106,268,109,270,110,271,111,273,111,276,112 279,112,283,113,286,115,293,117,299,118,307,121,315,123,349,123,350,121,351,120,351,115 e[/whitepad]

路过,DDDDDDDDDDDDDDDD

看不太明白不知其中奥妙

R2（330K）的电阻太大了吧，能工作吗？

[whitepad]***400;200;400,200;;** m201,46 l181,46,180,47,178,48,174,52,172,53,170,55,169,55,167,57,167,58,165,59,164,61,162,63,162,66,160,67,160,71,158,73,158,75,156,77,156,83,154,85 154,118,155,119,156,122,159,123,159,125,160,126,160,134,161,135,161,138,163,142,164,143,165,145,167,146,170,147,171,149,173,151,174,151,176,152,176,154,180,155 180,156,183,158,185,159,186,161,190,161,193,162,195,163,199,164,200,166,202,166,204,167,239,167,242,166,245,164,247,164,251,162,252,162,255,160,259,158,261,158 264,156,266,156,269,154,271,152,273,151,273,149,276,148,278,147,279,146,280,144,281,144,283,142,283,140,284,139,285,136,287,134,288,132,289,131,290,129,290,125 291,123,291,96,289,95,289,89,287,88,287,84,285,84,285,80,283,80,283,76,281,73,279,72,278,70,277,69,277,68,276,67,276,66,274,64,273,64,271,62 271,61,269,60,267,58,265,57,263,55,261,54,259,52,258,52,256,50,255,50,254,49,252,49,251,47,247,47,247,46,245,45,243,45,242,44,240,43,239,43 237,41,236,41,234,39,226,39,224,38,200,38,197,39,196,39,194,40,192,40,190,41,188,41,187,42,185,42,184,43,182,44,180,46,179,46,175,50,175,51 174,51,173,52,173,53,171,54,171,61,174,58,175,56,176,56,179,53,180,51,184,48,186,46,186,45,187,45,188,44,189,42,192,39,193,39,195,37,196,35 198,35,200,32,201,32,201,30,202,29,204,28,204,27,205,26,208,25,210,23,212,23,216,18,218,18,225,11,228,10,231,8,233,6,237,6,237,5,238,4 240,4,240,9 e|********* m236,42 l239,40,240,40,242,39,244,39,246,38,249,37,250,36,253,36,256,35,258,35,261,34,262,34,265,33,266,33,268,31,270,31 e|********* m265,52 l273,52,281,50,286,47,295,44,299,42,302,41 e|********* m175,92 l175,91,176,91,176,88,177,88,177,83,179,83,179,81,180,80,181,80,181,79,182,78,195,78,195,79,197,79,198,80,200,80,200,81,201,82,201,84,202,85 202,86,203,86,203,97,201,99,200,99,200,100,199,101,195,101,194,102,188,102,186,100,185,100,184,99,184,98,181,98,180,97,180,96,176,96,176,93,175,93 175,88,176,88 e|********* m261,90 l261,88,255,88,253,86,251,86,251,85,250,84,248,84,248,83,247,83,246,82,242,82,239,83,237,85,235,85,235,86,234,87,232,87,231,88,231,96,232,96 232,98,233,98,233,99,234,99,234,100,235,100,236,101,239,101,239,102,240,102,240,103,242,104,246,104,246,105,252,105,252,106,255,106,256,105,256,103,258,103 258,101,259,100,259,97,260,97,260,94,261,93,261,89,253,89 e|********* m192,88 l192,97,194,95,194,92,195,91,195,84,185,84,185,85,183,85,183,87,181,87,181,94,182,94,182,96,186,96,188,97,193,97,193,95,194,95,194,92,195,91 195,88,194,88,193,87,193,86,191,84,190,84,189,82,186,82,184,84,184,85,183,86,182,86,182,92,183,92,183,93,187,93,188,92,188,91,190,91,190,89 191,88,191,86,190,86,189,87,189,88,188,88,186,89,186,92 e|********* m240,88 l242,88,242,87,244,87,244,88,245,89,245,94,243,94,243,95,242,95,242,97 e|********* m228,115 l228,117,226,117,226,118,224,118,224,120,222,120,222,121,219,122,211,122,211,121,210,120,209,120,209,111,210,111,211,110,211,109,212,108,213,108,213,107,214,107 214,105,215,105,215,104,216,104,216,98,217,98,217,96 e|********* m214,88 l213,89,213,88,214,87,215,87 e|********* m203,145 l201,145,201,143,199,143,199,140,197,140,197,138,196,138,196,133,197,133,198,132,213,132,213,133,215,133,215,134,217,134,217,136,218,136,218,138,219,138,219,140 220,140,220,141,221,141,222,142,224,142,224,143,227,143,229,141,229,140,230,140,231,139,234,139 e|********* m239,137 l239,138,240,138,240,139,241,139,241,136,242,135,244,135 e|********* m152,90 l152,84,151,84,151,83,150,83,150,82,147,82,147,81,145,80,139,80,138,81,138,82,137,82,136,83,136,84,135,84,134,85,134,87,133,87,133,90,132,91 132,99,133,99,133,102,134,102,134,104,135,104,135,106,137,106,137,107,138,107,138,109,139,109,139,110,140,110,140,114,141,114,141,116,142,116,142,119 e|********* m147,124 l147,130,148,129,148,126,149,125,149,126,147,126,147,127 e|********* m298,113 l298,111,299,111,299,109,301,107,301,106,302,106,303,105,304,105,304,103,305,102,306,102,307,101,308,101,308,102,309,102,309,118,308,119,307,121,305,123,305,124 304,125,303,127,303,128,301,128,301,131,299,133 e|********* m294,141 l296,141,296,143,295,143,294,144,294,143 e|********* m201,1 l209,2,221,-2 e|********* m208,10 l208,7,228,7,228,6,230,6,230,5,231,4,233,4,236,3,239,3,239,6,238,7,238,8,233,13,231,13,230,14,221,14,220,15,218,15,218,16,215,16 211,20,210,20,210,23,209,23 e|********* m252,16 l252,14,253,13,254,13,254,11,259,11,259,13,260,14,260,15,261,15,261,19,262,19,262,30,261,31,261,32,257,36,253,36,252,37,246,37 e|********* m244,45 l244,43 e|********* m280,30 l281,30,281,29,282,29,282,28,283,28,283,26,284,25,288,25,289,26,290,26,291,27,295,27,295,30,297,30,297,32,298,32,298,34,299,34,299,36,300,36 300,38,301,38,301,40,297,44,293,44 e|********* m265,53 l263,53,263,51,265,51,265,49 e|********* m159,15 l159,14,161,12,161,11,166,11,167,10,167,9,173,9,173,11,175,11,175,14,176,14,176,18,177,18,177,19,178,19,178,24,179,24,179,30 e|********* m181,39 l180,39,180,36 e|********* m163,22 l163,15,162,15,162,13,160,13,160,11 e[/whitepad]

我才疏学浅，看不明白，学习下

做个内置的大功率可变电阻，安装前调一下电阻阻值，会不会方便些呢

现在的电源好多接上电阻都有点发烫！用电阻传并的方法虽说可以解决！但是现在夏天很容易着火！我是电子专业的！为了解决这个问题！我自己设计了一个电源！用1/4瓦的电阻都不会发烫！出去销售很有竞争力！因为你只要给客户说其他公司的LED灯箱要发烫！同样的价格客户一般都要用我的！需要这方面资料的朋友请加QQ：940920890。114408986 电话：15880894781 亢先生

我才疏学浅，看不明白，学习下——本文来自