[AMPS] FAILURE OF PARASITIC RESISTORS IN AL-811X AMPLIFIER

[Jon Ogden]

on 3/2/00 7:04 AM, Tom Rauch at w8ji@contesting.com wrote:

> I've never seen an oscillator that required a hand crank, like an old
> model T Ford, to get it started.
> 
> I see very few oscillators that come with a hammer so you can
> "bang" them to get them started.
> 
> As you state above, if the regeneration is enough to have an
> oscillation...it is enough to start the oscillation.
> 
> As a challenge, try to design a conventional amplifier that can sit
> for weeks or months behaving only as an amplifier, but will
> suddenly switch into a saturated oscillation state when "tickled"
> with a transcient. Add all the feedback and resonat circuits you like.

Tom, you said it all so eloquently!

If the amplifier is going to oscillate, it will oscillate.  It won't sit
there and just do nothing for weeks, months, years, etc. and then suddenly
WHAMMO!

Too true.  Too bad some people don't understand the laws of physics.

73,

Jon
KE9NA

-------------------------------------
Jon Ogden
KE9NA

Member:  ARRL, AMSAT, DXCC, NRA

http://www.qsl.net/ke9na

"A life lived in fear is a life half lived."


--
FAQ on WWW:               http://www.contesting.com/ampsfaq.html
Submissions:              amps@contesting.com
Administrative requests:  amps-REQUEST@contesting.com
Problems:                 owner-amps@contesting.com
Search:                   http://www.contesting.com/km9p/search.htm