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GlassWare Audio
- An excellent site promoting the vacuum tube based amplifiers.
Here you can find some basics of vacuum tube scheming theory,
and a considerable list of old and very interesting books describing
how to develop the Hi-End amplifiers.
basics of vacuum tubes
- Good list of useful old books to deal with the designing of tube amplifiers.
Tube Pages
- Here you can find the Data Sheets of electronic vacuum tubes manufactured in Europe.
Oldradio
- This is the site to be visited first of all when searching for Data Sheets (in Russian)
of "Made in USSR" vacuum tubes.
Audiomatica Sofia web page
- This site contains useful data and samples of output characteristics of many popular electronic vacuum tubes.
Andrea Ciuffoli
- This site contains lots of links and many interesting Hi-End amplifiers circuit diagrams.
It also provides lots of simulation models for electronic tubes.
Steve's Tube Pages
- This is very nice library of concise articles explaining how the vacuum tubes actually operate.
It also contains lots of interesting ideas and circuit diagrams.
Intusoft
- Integrated simulator - I-SPICE. This site contains a description of an integrated simulator
program I-SPICE, and lots of useful newsletters on SPICE modeling.
Duncan's Amp Pages
- This is an excellent site containing lots of vacuum tube simulation models, tube Data Sheets, and links.
Norman L. Koren
- This personal site contains the author's articles on SPICE vacuum tube simulation modeling and SPICE parameters defining.
Teodoro Marinucci
- This site contains a program for defining the necessary parameters for SPICE models and their optimization in Excel.
ALL SPICE Stuff - This site contains all information about SPICE.
MICRO-CAP - A trial version of this program is available free for download.
Vacuum Tube Device Approximations - I recommend becomes familiar with by this work. Very interesting articles.
Vacuum Tube Brasil™ - brasilian tube audio & tube ham radio webpage.
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