Bell Laboratories - The Evolution Of The Input Transformer By F.E. Field
I need to find more of these Bell Laboratories volumes. This a a cool article about the history of the input transformer from 1904 to 1926. Hope you enjoy this one.
This post originated at retro vintage modern hi-fi http://itishifi.blogspot.com
This post originated at retro vintage modern hi-fi http://itishifi.blogspot.com