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Old 7th March 2008, 11:07 AM   #1
GK is offline GK  Australia
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Default Amplifier Response Stability & All That.

Visited a hoarder-ish friend this afternoon who is my source of old electronics magazines on old electronic stuff in general. Flicking through a few 1958 issues of the late Australian publication, Radio Television and Hobbies (and a few contemporary girlie magazines as well) whilst eating pizza I came across an excellent article on the application of global negative feedback to valve power amplifiers and stabilisation techniques.
Being the nice guy that I am, I have scanned the pair of articles as stuck them on the web, links to the article pages appear below. Should go at least some way to dispelling some of the misconceptions and myths that get repeated here every so often (sorry, no pages from the girlie mags included).


Happy reading.


http://users.picknowl.com.au/~glenk/01.jpg
http://users.picknowl.com.au/~glenk/02.JPG
http://users.picknowl.com.au/~glenk/03.JPG
http://users.picknowl.com.au/~glenk/04.JPG
http://users.picknowl.com.au/~glenk/05.JPG
http://users.picknowl.com.au/~glenk/06.JPG
http://users.picknowl.com.au/~glenk/07.JPG
http://users.picknowl.com.au/~glenk/08.JPG
http://users.picknowl.com.au/~glenk/09.JPG
http://users.picknowl.com.au/~glenk/10.JPG
http://users.picknowl.com.au/~glenk/11.JPG
http://users.picknowl.com.au/~glenk/12.JPG
http://users.picknowl.com.au/~glenk/13.JPG
http://users.picknowl.com.au/~glenk/14.JPG
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Old 7th March 2008, 11:29 AM   #2
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Default Re: & All That.

Quote:
Originally posted by G.Kleinschmidt
no pages from girlie mags included
Major disap"point"ment, but the curves on piccies 8/9 are nice.
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Old 7th March 2008, 11:36 AM   #3
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Default Re: Re: & All That.

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Originally posted by jacco vermeulen


Major disap"point"ment,

Aren't you old enough to go out and buy your own?
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Old 7th March 2008, 12:00 PM   #4
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Aren't you old and smart enough to stop getting provoced into a bare knuckle bar fight by grampies ?
How's the LPI event doing ?
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Old 7th March 2008, 03:10 PM   #5
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Nice article.

Would you mind if I posted it on my web site? Credit will be given to you, of course...

Pete

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Old 7th March 2008, 09:19 PM   #6
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They don't make articles like good anymore.
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Old 7th March 2008, 09:56 PM   #7
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Quote:
Originally posted by jacco vermeulen
Aren't you old and smart enough to stop getting provoced into a bare knuckle bar fight by grampies ?
How's the LPI event doing ?

Erm, what's an LPI event?????


Quote:
Originally posted by pmillett
Nice article.

Would you mind if I posted it on my web site? Credit will be given to you, of course...

Pete

www.pmillett.com

No problem. I'm on a dial up account and time was limited, so I scanned the pages in the lowest resolution. This is usually good enough, but some of the original text was a bit faded, so in parts the low-resolution scan is hard to read. If you’re willing to accept larger files (500-1000k per page) I can send you some higher resolution scans when I get the time to do them (tomorrow).

Cheers,
Glen
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Old 7th March 2008, 10:30 PM   #8
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*gacks 'em*

TNX.
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Old 7th March 2008, 10:50 PM   #9
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Quote:
Originally posted by G.Kleinschmidt
what's an LPI event
Your GRA throttle body injection 383 stroker, ducky.
LPI is the term for LPG injection overhere
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Old 9th March 2008, 01:14 AM   #10
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Quote:
Originally posted by jacco vermeulen


Your GRA throttle body injection 383 stroker, ducky.
LPI is the term for LPG injection overhere

Oh. The GRA twin throttle body system is actually a fumigation system with a fully tunable main metering rod/circuit, separately jettable idle and progression circuits and stepped (primary/secondary) throttle actuation - not injection. Basically, a big Weber for LPG.
Incidentally, I got an extra ~80Nm out of it with an intake manifold change. Now I’ve just got the occasional traction issue.

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