few helpful charts

[mrphotodude]

here are a few things i made up back in the day and have posted in my workshop...
thought maybe others may get benefits from them as well.

 

[jackies]

What is the meaning of the lower diagram?
% what?
???
Mu?

 

[mrphotodude]

% in that chart means MU
that is more or less white paper...
a new 12ax7 may only actually do 70 mu when it is supposed to do 100

 

[bpucekov]

sorry bat what is MU ?
branko

 

[mrphotodude]

mu is the amplification factor.

 

[guavatone]

I Like It!!!!

good things to know that are kind of a PITA to search for. 

You can probably add a 12BH7, E88cc and ecc88 to this list easily.
Another god spec would be Max Va.

nice job photodude.

 

[bpucekov]

thanks

 

[Tadklimp]

very nice!!

 

[mrphotodude]

i had made those up a few years ago at work while we were not busy...
these days we are never busy so i came up with a solution to the 500000000+ op amp data sheets i  have laying around.
Left plenty of room for others to print out and fill in whatever they use for quick reference.

if something is wrong let me know...if there is need for a quad opamp chart, i can throw one together sometime soon here.

 

[mrphotodude]

Here is the 12ax7 pinout  illustrator file...modify for whatever tube you want.
http://rapidshare.com/files/205144454/ax7_pinout.ai.html

Here is the dual opamp Illustrator file that can be added to, modified ect..

http://rapidshare.com/files/205145123/opamp_chart.ai.html

with rapidshare, it only lets you download 10 times and expires after 90 days...
dont download if you dont have illustration software then.
if there is desire for these files, maybe i can put them on the groupdiy somewhere.

 

[mrphotodude]

You can probably add a 12BH7, E88cc and ecc88 to this list easily.

this chart was all about direct drop in replacements. the mu changes, but the heaters/pinouts stay the same.

 

[tv]

The Justified Ancients of MU mu.

 

[mrphotodude]

The Justified Ancients of MU mu.

are you saying there is a sunken island of advanced mullard engineers out there?  ;D

 

[mrphotodude]

print this out for capacitor reference.
http://www.turretboards.com/capacitor_conversion_chart.htm

i had a large printout in my shop, always was glancing at it.
http://www.turretboards.com/capacitor_conversion_chart.htm