Talk:Linear amplifier

message: The articles on Amplifier and Electronic amplifier cover all this material in more detail with better context. Brews ohare (talk) 19:43, 9 January 2008 (UTC)
replies: text: I agree. Adding merge proposal templates. --mcld (talk) 08:34, 21 May 2010 (UTC)

text: * I apologise if I made a mistake in protocol. I suppose it is better to say that I don't agree with the OP, then, and am proposing a merge instead! --mcld (talk) 18:37, 24 May 2010 (UTC)

text: Comment - Linear amplifier is also a term used to describe a form of Op Amp, e.g. an integrated circuit. Maybe you want to rename this "Linear amplifier (radio)"? - LuckyLouie (talk) 19:31, 24 May 2010 (UTC)

text: Me too. I'd rather see it merged. Keeping this as an article about CB/ham use of the term (sourced to what, I don't know) seems a bit narrowly focused to me. - LuckyLouie (talk) 19:11, 2 June 2010 (UTC)

text: There appears to more support for merging to Electronic amplifier than Amplifier. I have adjusted the merge banners. --Kvng (talk) 23:11, 20 December 2010 (UTC)

text: Comment The articles are not going to go exactly to where I envision they should with your approach but I encourage you (and all other editors) to hop in and start making WP:BOLD improvements as you see fit. --Kvng (talk) 16:06, 5 June 2011 (UTC)
thread_title: This article should be deleted

message: :"A side effect of improving the efficiency is that the current drawn from the high voltage supply will vary more as a function of the power input into the amplifier, this can result in unwanted effects such as the output of the HT pack being modulated by the audio modulated RF driven into the amplifier. An extreme example of this has been observed during radio contests where a large linear is used to amplify morse (carrier on/off keying), it has been the case under some conditions that the wildly changing load on the petrol-driven 240 volt 50 Hz generator set has been sufficient to cause the petrol motor to change speed (and supply frequency) as it attempts to maintain its AC output voltage at 240 volts. In short, any person able to hear the petrol engine will then be able to hear the morse.
:"A simple cure for this is to always attach a fixed small load such as several light bulbs to the output of the 240 volt AC generator."
This section seems to be off-topic and/or too much of a detail for this article.  We do not give construction tips for building linear amps, for example.  Should we delete it?--Albany45 (talk) 02:13, 1 August 2011 (UTC)
replies: text: Part of the first sentence might be OK; yes, delete the rest.  Dicklyon (talk) 03:54, 1 August 2011 (UTC)
replies: text: I agree. Looks like this article was originally written to focus only on a "ham linear" point of view. - LuckyLouie (talk) 18:14, 1 August 2011 (UTC)
thread_title:  Generator Power? 

message: Is the term "linear amplifier" (as a noun phrase) used much outside amateur radio and allied areas?  A quick search turns up zero non-amateur-related references.  If this is an Amateur Radio term (mainly), the article should say so.  Of course, engineers are quite interested in linearity of amplifiers, but I am not familiar with using "linear amplifier" to designate a class of amplifiers (e.g., class A - AB2 vs class C).  Not to be fussy, but every amplifier is non-linear.  Linearity is an ideal and a matter of degree.  This might be mentioned as well.--Albany45 (talk) 13:36, 4 August 2011 (UTC)
thread_title:  "Linear Amplifier" - who uses term? 

message: This article is failing to make a clear case as to why linearity is needed, and also when it's not needed. Linear amplifiers (in the radio sense) are described specifically as such, in contrast to a simpler design that isn't linear.  As the talk page comments for deletion imply, this needs to be explained. Andy Dingley (talk) 09:45, 17 October 2012 (UTC)
replies: text: Agree. I have added a tag. -—Kvng 15:00, 20 October 2012 (UTC)
thread_title:  Better lead and introduction needed. 

message: Removing this section, because it's off topic.  Some history of linear amplifiers for RF might be more appropriate.
:The first large amplifier used in the United States for public domestic radio broadcasting was in operation between 1934 and 1939 at WLW in Cincinnati. It was an experimental amplifier and was driven by the radio station's regular 50 kW transmitter. Not a linear amplifier, it operated in class C with high-level plate modulation. The amplifier required a dedicated 33 kV electrical substation and a large pond complete with fountains for cooling. It operated with a power input of about 750 kW (plus another 400 kW of audio for the modulator) and its output was 500 kW.
The explanation of Class C is likewise off topic, but we'll leave that for another day.  The whole article still needs to be rationalized (ie merged) with respect to other RF amplifier topics.--Albany45 (talk) 03:07, 4 December 2012 (UTC)
replies: text: I agree, it is off topic here. I inserted a copy of it into WLW#History. -—Kvng 19:48, 6 December 2012 (UTC)
thread_title:  Early large amplifiers 

message: Ahhh, more exactly, "A linear amplifier is an electronic circuit whose output will increase linearly in response to a linear imput".
Quasi-mathematically:    output = (amplification_constant X input) + base_constant.
Your definition is a subset of this,  with base_constant = zero.
Old_Wombat (talk) 07:54, 10 June 2013 (UTC)
thread_title:  "A linear amplifier is an electronic circuit whose output is proportional to its input ..."