Language: 
To browser these website, it's necessary to store cookies on your computer.
The cookies contain no personal information, they are required for program control.
  the storage of cookies while browsing this website, on Login and Register.

Storing Cookies (See : http://ec.europa.eu/ipg/basics/legal/cookies/index_en.htm ) help us to bring you our services at overunity.com . If you use this website and our services you declare yourself okay with using cookies .More Infos here:
https://overunity.com/5553/privacy-policy/
If you do not agree with storing cookies, please LEAVE this website now. From the 25th of May 2018, every existing user has to accept the GDPR agreement at first login. If a user is unwilling to accept the GDPR, he should email us and request to erase his account. Many thanks for your understanding

User Menu

Custom Search

Author Topic: 1913 - Alexander Meissner's Positive feedback in a vacuum triode  (Read 7862 times)

Offline Goat

  • Hero Member
  • *****
  • Posts: 633
@ All

This is being posted as I found it on http://people.clarkson.edu/~ekatz/scientists/meissner.html

Not sure if this is the answer to other OU avenues but it sure looks interesting for a REALLY OLD TRIODE !

"Alexander Meissner was born on September 14, 1883, in Vienna, Austria. He studied at the Vienna College of Engineering, earning the doctor of technical science degree in 1902. In 1907 he joined the Telefunken Company of Berlin, where he conducted research on radio problems. He improved the design of antennas for transmitting at long wavelengths, devised new vacuum-tube circuits and amplification systems, and developed the heterodyne principle for radio reception. In 1911 Meissner designed the first rotary radio beacon to aid in the navigation of the Zeppelin airships.

In 1913 he was the first to amplify high-frequency radio signals by using  a regenerative (positive) feedback in a vacuum triode; this principle made it possible to build radio receivers more sensitive than any earlier type. In June 1913 Meissner used this electronic circuit to transmit speech."

Regards,
Paul

« Last Edit: January 16, 2009, 08:03:50 AM by Goat »