John Curl's Blowtorch preamplifier part II

[syn08]

Originally Posted by janneman

Well, you know what they say: Those who can, do, those who can't, teach ....

jd

And those who can't even teach, "coordinate".

[john curl]

I thought that those who can't teach, preach!

[Wavebourn]

No, they teach how to teach, usually...

[ikoflexer]

Originally Posted by john curl

I think it was in the 'IEEE Transactions on Consumer Electronics'. I hope that this helps narrow the search.

The one relevant study of this sort I could find is by two guys from IBM, Allen and Segall, but it dates back to 1974, before computer switching supplies were in wide use. You're probably referring to something other study.

Allen, G.W. and D. Segall, “Monitoring of Computer
Installations for Power Line Disturbances,” IEEE Winter
Power Meeting Conference Paper, WINPWR C74 199-6, 1974

A more recent paper:

D.S. Dorr et al, “ Interpreting Recent Power Quality Surveys to
Define the Electrical Environment,” IEEE Transactions On
Industry Applications, Vol. 6, No. 6, November/December 1997,
pp. 1480-1487.

reviews a few different surveys of power line disturbances, in particular one cited quite a bit, by NPL.

However, what I often find frustrating in this thread is that you guys will not talk straight. You go ahead and hint at some stuff, but then not say what you mean, and one has to pull it out of your mouths with the pliers, so to say. What's up with this? If you want to say something, say it. If not, then don't.

In particular, does RF interference matters to audio amplifiers? If it does, then what are the levels that one should start to be concerned with, and what are your preferred techniques for dealing with that?

[stinius]

Originally Posted by ikoflexer

but it dates back to 1974

I guess that's the one.

[syn08]

Originally Posted by ikoflexer

However, what I often find frustrating in this thread is that you guys will not talk straight. You go ahead and hint at some stuff, but then not say what you mean, and one has to pull it out of your mouths with the pliers, so to say. What's up with this? If you want to say something, say it. If not, then don't.

You may want to adjust your expectations. Many contributors in this place are not here for teaching or sharing with others purposes.

[ikoflexer]

Originally Posted by stinius

I guess that's the one.

Well, that can be had online, following this link.

But I think the results are a bit dated.

[ikoflexer]

Have fun.

http://www.arrl.org/tis/info/pdf/9306064.pdf

[john curl]

This is not the paper. It would be in one of the Transactions that I subscribed to at the time. Consumer Electronics, Circuits and Systems, or Solid State Circuits, to name 3. Others will follow, if this is not a complete enough list. The 'Proceedings of the IEEE' might be also included. However, I suspect 'Consumer Electronics' the best candidate.
Ikoflexer, it is also important that you read my follow-up input as well, before giving conclusions.

[ikoflexer]

I gave no conclusions. I'm still looking for that paper. Help me out here with some more info, anything about the contents? Key words from the title of the paper, author names, anything? If you do recall anything else, please let me know.