Here is a list of links to other sites I have found
useful. Please e-mail me
if you wish me to add your site or any other site you think should
be included or if you wish a link to your site removed or
changed.
Duncan Munro's TDSL (Tube Data Sheet Locator) is by far
the best source of valve data on the internet. This search engine
provides direct links to valve data on many of the other sites
listed here. Also take a look at Duncan's site which has a
lot of other interesting stuff.
A really huge collection of valves, arranged by country of
origin. Many examples of rare early types. English and German
versions are present but the German is more complete but still
under construction.
(English version) The English version is not yet complete.
The German version, accessible from the linked page is more
complete. Mostly Continental European valves, many modern.
Contains a useful search by category.
A page of old valves. See also the main Mike's Electric Stuff
pages for lots of other stuff including Crookes/Geisler
tubes, Nixies, Tesla coils etc. etc.
A visualy very appealing site devoted to a single valve - the PX4, a
directly heated power triode beloved of single ended triode
amplifier enthusiasts. A nice chronological gallery of this
long lived type is included.