Barkhausen oscillations and what is known as the Condition for Barkhausen Oscillation are two separate but related topics. The 'Net deals with both, (q.v.), but as for Barkhausen oscillations, the following is a simple-to-understand article.
http://www.smeter.net/daily-facts/7/fact22.php
It's interesting to note that F. E. Terman discusses what is a very similar arrangement (without a reference to Barkhausen) in this book 'Radio Engineering' (Mc. Graw-Hill, 1932) pp. 351 - 352. His name for that valve configuration is the 'Inverted Vacuum Tube'.
Al. / Skywave / Oct. 2, '13 //
http://www.smeter.net/daily-facts/7/fact22.php
It's interesting to note that F. E. Terman discusses what is a very similar arrangement (without a reference to Barkhausen) in this book 'Radio Engineering' (Mc. Graw-Hill, 1932) pp. 351 - 352. His name for that valve configuration is the 'Inverted Vacuum Tube'.
Al. / Skywave / Oct. 2, '13 //
