壳壳 发表于 2012-3-22 21:28

[转发]全胆高压稳压线路图。

看了一些关于音响用稳压电源的讨论，某些观点认为：稳压电源的制作要求比音频放大电路部分的制作要求更高，无论是材料的等级还是电路特性，都要高。





原文出处：http://www.akh.se/ake/instr/powersupply.htm

xxx-007 发表于 2012-3-23 21:00

　　是滴，名机电源都不轻。

柳暗花明 发表于 2012-3-24 18:38

当然！功放是“汽车”，电源是“燃油”。高级汽车一定要用高级燃油！

壳壳 发表于 2012-4-12 15:09

Great as the feedforward shunt regulator is at rejecting power-supply-induced noise, it does little to attenuate the signal-induced rail noise. The following circuit addresses that problem.



Remember that the EL84 holds two grids and that both control the flow of current through the tube. In the above circuit, we take advantage of the second grid. The 12AX7 triode is configured in a grounded-grid topology, which offers wide bandwidth and no phase inversion. The 12AU7 works in a cathode follower circuit and it directly drives the EL84’s grid number 2 with a greatly amplified rail noise signal. This might not be enough.

What might prove best is to use both a feedforward shunt regulator and a conventional shunt regulator at once, so that the first may eliminate the rectifier noise and the second, the signal-induced noise caused by the different stages within the amplifier tugging and pulling on the B+ rail.




原文出自：http://www.tubecad.com/2007/01/blog0095.htm

wxhjl 发表于 2012-4-12 15:50

本帖最后由 wxhjl 于 2012-4-12 15:52 编辑

回复 4# 壳壳
这是并联式稳压电路，不同于1楼中的第1张图的串联式稳压电路。

kenny 发表于 2012-4-12 16:35

两个EL84，一个搞这边，一个搞那边，好是好，就是成本高。

壳壳 发表于 2012-4-12 16:50

回复 6# kenny


    多一份投资，企望多一点收获。

郝美丽 发表于 2012-4-13 18:16

做胆前级，稳压电源常用到，这是不错的资料。

zping3886 发表于 2012-4-14 01:06

准备用在cat电源上

火星计划2009 发表于 2012-4-14 06:06

我的FD71就是采用807做电源调整管效果非常不错
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