Thread: Quenching
View Single Post
  #2   Report Post  
Old May 7th 14, 06:43 PM posted to uk.radio.amateur,rec.radio.amateur.homebrew
gareth gareth is offline
external usenet poster
 
First recorded activity by RadioBanter: Sep 2012
Posts: 1,382
Default Quenching

"Brian Morrison" wrote in message
...
On Wed, 7 May 2014 17:00:29 +0100
gareth wrote:

I feel that I understand something when I can explain it to
a rank amateur such that they will also understand it, but
one thing I have yet to understand is the purpose of the quenching
action in superregeneration, apart from thequenching itself.

How does the quenching of an oscillating stage yield a detector
that works for AM, FM and / or SSB, when the quenching frequency
is supersonic, and neither at the RF nor the AF frequencies?



The quench kills the gain cyclically, allowing the RF stage gain to
build up again until the next quench. The result is that the RF, quench
and AF frequencies are all present at the output of what is essentially
a self-oscillating mixer.


But what does the quench DO? What it its purpose? Why not just let
the oscillator run for the self-oscillating mix?