Heads up for DIYers

[Waterhond]

Mosey over to Lenco Heaven for a most excellent heads up.

http://www.lencoheaven.net/forum/index.php?topic=2938.0;topicseen

How about the official 200+ page PDF of the US Navy training module:

Navy Electricity and
Electronics Training Series
Module 6?Introduction to Electronic
Emission, Tubes, and Power Supplies

and more...