Talk:Valve RF amplifier

Valve circuits DO NOT last longer than transistorized circuits
"Usually lasts longer than transistorized circuits.[citation needed] A transistorized oscilloscope may last 10 to 15 years while a tube driven one much longer.[citation needed]" I can't find a source for this, because there isn't one. Transistors quickly die if mistreated, but barring ion migration (in overloaded transistors or old Ge ones)the typical MTBF is in the order of tens to thousands of times that of tubes. Tubes in special applications at the very end of the "tube era", such as SAGE, computers, transatlantic cables, reached very high MTBFs but at huge cost levels. Deleted assertion. Inserted qualifications.

Distortion section does not make any sense
It's a sour soup of mostly true but totally irrelevant and contorted statements, as correctly pointed out in superscript comments (!). If someone doesn't fix it I'll delete it.

I have redone this section JNRSTANLEY (talk) 13:24, 3 June 2013 (UTC)

Doherty amplifier
This article should mention the Doherty linear amplifier, one of the most significant historic high-power RF amplifier designs (U.S. patent granted in 1940, and related circuits are still being patented today). A related design was the basis for most high-power AM transmitter designs since the late 1950s. 18.26.0.5 19:54, 25 May 2007 (UTC)

The Doherty is indeed important. I have added a mention of it in the Amplitude Modulation article. The Doherty was mainly used in AM broadcasting, to my knowledge. There is also a good article on Doherty. JNRSTANLEY (talk) 13:30, 3 June 2013 (UTC)

Comments in article
user:124.181.32.68 left some comments in the article body. I have reverted this but they seem potentially useful. -—Kvng 15:13, 30 September 2012 (UTC)

Yes, some of the comments added in the body were useful, I have incorporated some of them into the body. JNRSTANLEY (talk) 13:31, 3 June 2013 (UTC)

This article still has some defects, probably including some hopefully minor ones I added, such as punctuation, etc. However, I believe I have corrected most of the major errors. Suggestions welcome. JNRSTANLEY (talk) 13:34, 3 June 2013 (UTC)