Even the vacuum tube had not yet been invented by then ... When we got home, I tried looking up subway car technical data, but when I came to a wiring schematic, I couldn’t read it. The symbols were ...

Tube Home Theater Block_diagram No comments by: Gregory L. Charvat June 2, 2014 Title: Copy Short Link: Copy Post navigation ← Keep Those Filaments Lit, Design Your Own Vacuum Tube Audio Equipment ...