Industrial Alchemy edit / delete

Unusual valves, semiconductors and display devices - all the things that were competing with Nixie tubes, for example.

to electronics history led retrotech semiconductor valve ... on 07 October

Tonewheel Tubeworks edit / delete

German Hammond technician. This has some interesting mods for the T-200 series, which are effectively transistorised versions of the L-100 -- e.g. adding a valve distortion unit based on Russian miniature valves. I also like his tonewheel level calibration software...

to audio distortion electronics hammond organ valve ... on 27 August 2016

Welcome to Imajeenyus edit / delete

Various fun electronics stuff -- particularly the construction of DIY vacuum fluorescent displays. Very neat!

to display electronics glassblowing hv optoelectronics panaplex vacuum valve ... on 07 June 2015

Valve Software ยท GitHub edit / delete

Assorted games-related code. The OpenGL debugger would be worth investigating -- but this may also be of interest to my students who'd like to read some real game code...

to ag0700 ag0803 debugging games opengl software valve ... on 25 March 2014

The Douglas Self Site edit / delete

Audio electronics, and a fascinating collection of obsolete engine technologies. Steam engine using boiling petrol as a working fluid, anyone?

to amplifier amusements audio electronics engine engineering mechanica retrotech steam valve ... on 19 June 2012

Valves And Transformers (Contents) edit / delete

A decent selection of transformers for valve circuits. Including very large power transformers...

to electronics psu shopping transformer valve ... on 18 June 2012

Pacific T.V. Online Tube Catalog edit / delete

A valve supplier -- but notable also for their collection of schematics, which includes things like VTVMs.

to electronics radio shopping test-equipment valve ... on 02 May 2012

Electronics Projects - Vacuum-State Electronics edit / delete

A variety of neat valve-based projects -- amplifiers, scope-based TVs, etc.

to amplifier audio electronics retrotech tv valve video ... on 10 April 2012

Welcome to the PA3CSG website! edit / delete

Big RF amplifiers with cheap Russian valves, and serious filters for them.

to amateur amplifier electronics hf radio rf valve vhf ... on 27 February 2012

Antique Electronic Supply edit / delete

They seem to be more interested in the audio market these days (no great surprise, given that's where the money is!).

to electronics retrotech shopping valve ... on 13 September 2011

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