Tube-Town Forum
Technik => Tech-Talk Soldano => Thema gestartet von: joad004 am 14.09.2006 21:17
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Hi,
Sorry for writing in english, eventhough I can read and understand german quite good you would have a hard time understanding my written german.
I am building my second tube amp (SLO50W with modified preamp) and since I have looked at the JCM800 type torodial PT at tubetown I am thinking about using that one. However, there seems to be some users reporting that you will have issues using a Torodial PT. For example at ax84.com there has been reports about more issues with hum..
Have any of builders used a torodial PT in your builds? If so, did it work out ok?
Cheers from Sweden,
Johan
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Hallo,
normaly you should have less hum problems with torodial transformers than with normal EI PTs. I prefer the torodial even if they do not look so good as the "old" PTs.
Best regards, Dirk
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Hi Dirk,
Less hum sounds good since I have an idea of trying out a rack type amp this time. Thanks for replying.
Cheers,
Johan
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Hi Johan,
I second that, toroidals usually produce a lot less hum than EI transformers. The only "drawback" is a higher surge current due to the low leakage inductance - but this should not cause problems.
PS: "totoidal vs. Iron based" is definitely misleading, since toroidals are also made from iron. It is usually one long rolled up strip of iron.
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Hi Pharos,
Does this surge current put more stress on capacitors, switches or will it also affect B+ voltage during load?
I know that my title was a bit misleading but I could find a good word for EI type transformers except that you see more iron on them :-)
Thanks,
Johan