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47 tube [message #10669] Sat, 14 August 2004 14:15 Go to next message
West Valley Joe is currently offline  West Valley Joe
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Registered: May 2009
Chancellor
Is a 47 like a 45? I was given several recently. Are there any good designs for the 47 tube? Thanks, WVJ

Re: 47 tube [message #10670 is a reply to message #10669] Sun, 15 August 2004 10:24 Go to previous messageGo to next message
Thermionic is currently offline  Thermionic
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Registered: May 2009
Master
Joe, the 45 is a triode, while the 47 is a pentode. Of course, the 45 has a four pin base and the 47 a five pin. Sorry, I know of no amplifier schematics using this tube.

Thermionic

Re: 47 tube [message #10671 is a reply to message #10670] Sun, 15 August 2004 11:52 Go to previous messageGo to next message
West Valley Joe is currently offline  West Valley Joe
Messages: 11
Registered: May 2009
Chancellor
Rats but thanks. WVJ

Re: 47 tube [message #10695 is a reply to message #10669] Tue, 24 August 2004 20:12 Go to previous messageGo to next message
colinhester is currently offline  colinhester
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Location: NE Arkansas
Illuminati (3rd Degree)
Quick google search found:
http://home.pacifier.com/~gpimm/47.htm

I'm sure there are many others.....Colin

Another link [message #10696 is a reply to message #10695] Tue, 24 August 2004 20:28 Go to previous messageGo to next message
colinhester is currently offline  colinhester
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Location: NE Arkansas
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http://www.nutshellhifi.com/VSAC2003.html

Scroll down page

Thanks! [message #10697 is a reply to message #10695] Tue, 24 August 2004 20:34 Go to previous messageGo to next message
West Valley Joe is currently offline  West Valley Joe
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That's very good, thanks! WVJ


Another thanks! [message #10698 is a reply to message #10696] Tue, 24 August 2004 20:35 Go to previous messageGo to next message
West Valley Joe is currently offline  West Valley Joe
Messages: 11
Registered: May 2009
Chancellor
Thanks again! WVJ

What did you decide to do? [message #10731 is a reply to message #10669] Sun, 19 September 2004 11:59 Go to previous messageGo to next message
colinhester is currently offline  colinhester
Messages: 1349
Registered: May 2009
Location: NE Arkansas
Illuminati (3rd Degree)
Are you going to build an amp based on the 47's? Just curious.....Colin

47 winter project [message #10733 is a reply to message #10731] Fri, 24 September 2004 16:36 Go to previous message
West Valley Joe is currently offline  West Valley Joe
Messages: 11
Registered: May 2009
Chancellor
Yes, I think I'll make a winter project 47 amp. Thanks again, WVJ

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