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47 tube [message #10669]

Sat, 14 August 2004 14:15

West Valley Joe
Messages: 11
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

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Re: 47 tube [message #10670 is a reply to message #10669]

Sun, 15 August 2004 10:24

Thermionic
Messages: 208
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

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Re: 47 tube [message #10671 is a reply to message #10670]

Sun, 15 August 2004 11:52

West Valley Joe
Messages: 11
Registered: May 2009

Chancellor

Rats but thanks. WVJ

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Re: 47 tube [message #10695 is a reply to message #10669]

Tue, 24 August 2004 20:12

colinhester
Messages: 1349
Registered: May 2009
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

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Another link [message #10696 is a reply to message #10695]

Tue, 24 August 2004 20:28

colinhester
Messages: 1349
Registered: May 2009
Location: NE Arkansas

Illuminati (3rd Degree)

http://www.nutshellhifi.com/VSAC2003.html

Scroll down page

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Thanks! [message #10697 is a reply to message #10695]

Tue, 24 August 2004 20:34

West Valley Joe
Messages: 11
Registered: May 2009

Chancellor

That's very good, thanks! WVJ

http://home.pacifier.com/~gpimm/47.htm

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Another thanks! [message #10698 is a reply to message #10696]

Tue, 24 August 2004 20:35

West Valley Joe
Messages: 11
Registered: May 2009

Chancellor

Thanks again! WVJ

http://www.nutshellhifi.com/VSAC2003.html

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What did you decide to do? [message #10731 is a reply to message #10669]

Sun, 19 September 2004 11:59

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

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47 winter project [message #10733 is a reply to message #10731]

Fri, 24 September 2004 16:36

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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