Showing posts with label Sylvania. Show all posts
Showing posts with label Sylvania. Show all posts

Tuesday, July 24, 2018

Monday, October 3, 2016

Sylvania 212-D

Really BIG triode. As I understand it Western Electric and Sylvania made this beastie. I have not been able to locate the datasheet but it makes a 211 look small.

Thursday, December 19, 2013

Sylvania Electric - Time For Today Time Tested For Tomorrow

Early Sylvania Electric tube ad.