[AMPS] Linear Amplifiers

[Rich Measures]

>> From:          Rich Measures <measures@vc.net>
>> Date:          Mon, 28 Jul 97 12:17:17 +0000
>
>> >What is the difference between audio amplification and linear RF
>> >amplification? 
>> 
>> Audio amplifiers use a 2-tube push-pull configuration with a transformer. 
>>  Each tube supplies half of the waveform.  
>
>Not true, audio amplifiers can use any configuration.  Most audio 
>amplifiers are single ended, unless high power is needed. 

The only audio amplifier configuration listed in the Eimac technical 
specification sheets is push-pull.  This discussion is not about low 
level amplification, Mr. Rauch.  
...snip...
>>Audio amplifiers can amplify 
>> non-coherent waveforms and coherent waveforms.  Push-push RF linear 
>> amplifiers only amplify coherent waveforms.  
>
>Not true. RF amplifiers can amplify waveforms that vary in 
>period 

Period equals 1/frequency.  Class A broad-band amplifiers--such as those 
used in receive applications--amplify waveforms that change in 
period/frequency.   Tube-type high power linear amplifiers are band 
specific.  To change frequency, one needs to change the bandswitch.  
- We have been talking about high power tube-type RF linear amplfiers.  
Mr. Rauch is talking about RF amplifiers in a receiver.  [AMPS] is not 
about receiver amplifiers.  
Rich---

R. L. Measures, 805-386-3734, AG6K   


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