Karl D. Swartzel Jr.

Add links
From Wikipedia, the free encyclopedia

This is an old revision of this page, as edited by Ser Amantio di Nicolao (talk | contribs) at 04:31, 4 January 2019 (Removing from Category:American inventors using Cat-a-lot). The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.

Karl Dale Swartzel Jr. (June 19, 1907 – April 23, 1998)[1] was the inventor of the operational amplifier (or 'op-amps'). He filed the patent for the 'summing amplifier' in 1941 when working at Bell Labs.[2]

References

  1. ^ Karl D. Swartzel Jr. at Find a Grave
  2. ^ US 2401779, Karl D. Swartzel Jr., "Summing amplifier", published 11 June 1941, assigned to Bell Telephone Labor Inc. 


Stub icon

This article about a physicist is a stub. You can help Wikipedia by expanding it.

Retrieved from "https://en.wikipedia.org/w/index.php?title=Karl_D._Swartzel_Jr.&oldid=876740529"