In Reply to: RE: From a practical standpoint... posted by Tony Lauck on July 15, 2012 at 09:27:13:
History of Philbrick,
This post is made possible by the generous support of people like you and our sponsors:
Follow Ups
- The Philbrick model K2-W, the first commercial vacuum tube operational amplifier back in 1952. - cfb 12:09:30 07/15/12 (1)
- Thanks for the link! nt - Tony Lauck 12:29:46 07/15/12 (0)