點解D胆有大有細?

各位大哥,

請不要見笑. 例如一部胆機, 可用 KT66, 6L6GC, 6L6, 6L6G, EL34, EL84 (加 Yellow Jacket) ... 但這些胆的 Size 或結構大大不同 ....

如 6L6G 比 6L6GC 肥好多 ... 是什麼原因? 有無一些 Rules ... e.g. 肥 D 的胆會力水好 D ?

[quote:3bfd697d49="alfcat"]各位大哥,

請不要見笑. 例如一部胆機, 可用 KT66, 6L6GC, 6L6, 6L6G, EL34, EL84 (加 Yellow Jacket) ... 但這些胆的 Size 或結構大大不同 ....

如 6L6G 比 6L6GC 肥好多 ... 是什麼原因? 有無一些 Rules ... e.g. 肥 D 的胆會力水好 D ?[/quote]


EL34.84要改線路才可用，KT66與6L6大家的五極腳位是一樣的，但有些零件也要改些，至於6L6的只是改良的及廠商的制作有所不同及改善，所以可以代用，就如同6922、6dj8、ECC88等。
至於Size好像6SN7及CV181則完全不同，但也可代用呢！只要特性一樣便可以了。
就因為這樣玩膽機可以換上不同廠的膽去作比較，是一大樂事啊！

Modi 兄,

多謝你的資料.

我重想知個胆的形狀是否有特定的原因? 如 300B, 6L6G 等個個似個氣球 .... 其他主要似枝火箭 ....

重有嘢我覺得好奇 ... 大家都跟個 spec 去做, 但個個造出來都唔同聲 ... ha..ha..真奇怪 :

[quote:92104a4604="alfcat"]Modi 兄,

多謝你的資料.

我重想知個胆的形狀是否有特定的原因? 如 300B, 6L6G 等個個似個氣球 .... 其他主要似枝火箭 ....

重有嘢我覺得好奇 ... 大家都跟個 spec 去做, 但個個造出來都唔同聲 ... ha..ha..真奇怪 :[/quote]


明天答你吧！

modi Sir
你還末答啊！我都想學嘢啊！

modi Sir
我都想學嘢啊！

modi sir
可不可以上儀器班時答我呢？非常想知的答案。

If you guys are so interested in tubes, please try to get the book "rinciples of Electron Tubes"  written by Herbert J. Reich.

Dear cheaplow
Would you post the photo of your book. I search three books named Principles of Electron Tubes written by Herbert J. Reich. Thank you.

Here is the photo.  Also, I would like to recommed another one which contains a lot of useful stuff, in particular related to 300B.  You may have already got it.  If not, keep an eye on ebay and place a bid if it is below US$10.00.  The seller is a DIY'er living in Quebec, Canada.  The circuit SE 45 inside is designed by him.  He is a very smart guy who has got a lot of money by reproducing and selling that book on ebay over the last 4 years.

Dear cheaplow
Thank you for your recommendation.