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gm Characteristic

 投稿者:jazbo8  投稿日:2015年 2月 1日(日)03時38分49秒
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  Ayumi-San,

I just tried to plot the gm curve for the 300B, but as you can see from the attached file, it has a concave shape instead of the slight "S" shape shown in the datasheet. I also tried other tubes, and their gm curves had a similar concave shape. What might be the reason for such behavior?

Thanks,
jaz

https://dl.dropboxusercontent.com/u/1326040/gm%20curve.png

 
 
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