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Old 4th November 2006, 12:24 PM   #21
Tyimo is offline Tyimo  Hungary
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Thanks Culture!

Greets:

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Old 4th November 2006, 12:26 PM   #22
Tyimo is offline Tyimo  Hungary
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Hi Lineup!

Quote:
Was just waiting for somebody to ask.
Sometimes people ask about things then forget about it all
Yes, but not me!
You know me already, I love to ask!!!

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Old 5th November 2006, 03:47 PM   #23
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I just ordered the parts for my boards today. I'll let you know soon.
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Old 5th November 2006, 05:31 PM   #24
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A english version of this elektor's article would be very usefull for me.
Anyone can help me with this?
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Old 5th November 2006, 06:09 PM   #25
lineup is offline lineup  Sweden
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Quote:
Originally posted by diegot
A english version of this elektor's article would be very usefull for me.
Anyone can help me with this?
I don't have it in english. And at internet, for free download is only dutch version.

Now, I am sure some member in UK may have this Elektor magazine issue from 1997, at home.
We need such member with a scanner to read this topic.

Chance is not very big ....

If you know a bit german, like me, is not very big problem.
Dutch and german is not too different.
So I can understand that dutch PDF rather well.
But would be too much work to translate all that text.

And besides, I have that 1997 magazine in my own language here at home.

=====================


However this is a great solution buy!

Quote:
The Audio Collection 1
More than 75 audio designs for home construction
More than 75 audio circuits from the past five year volumes of Elektor Electronics magazine. Includes:
- surround-sound decoder
- compact amp
- sampling rate converter
- battery powered preamplifier
- Titan 2000
Using the included Acrobat Reader you are able to browse the articles on your computer, as well as print texts, circuit diagrams and PCB layouts.
And I am almost sure this hybrid amplifier is on that Elektor CD.
There is also a later audio Elektor CD
The Audio Collection 2

The price is 12.05 per CD.
If you buy both, you will have the best audio projects published at least last 10 years.
With full articles, schematics, description and building instructions
... in english.

Links:
http://www.elektor-electronics.co.uk...ProductID=2003
http://www.elektor-electronics.co.uk/

Click the image to open in full size. Click the image to open in full size.


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Old 6th November 2006, 04:34 AM   #26
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I was reading some stuff over at John Broskie's Tube Cad Journal and there is a mention of an interesting hybrid published in Electronics World, October 1995 by Jeff Mcauly titled "Hot Audio Power" The only library around here that carries the magazine has the page turn out of it.

Anyone happen to have a schematic for it?

Don
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Old 6th November 2006, 05:19 AM   #27
lineup is offline lineup  Sweden
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Quote:
Originally posted by smoking-amp
I was reading some stuff over at John Broskie's Tube Cad Journal and there is a mention of an interesting hybrid published in Electronics World, October 1995 by Jeff Mcauly titled "Hot Audio Power" The only library around here that carries the magazine has the page turn out of it.

Anyone happen to have a schematic for it?

Yeah, you are right!

This article was first mentioned by member boholm from Denmark
in April 2005 in this post:
opamp driving tubes

Quote:
In Electronics World October 1995 issue under the title "Hot audio power" Jeff Macaulay designs a 32W power amplifier with a full power bandwidth of 5 Hz to 55 kHz and 0.07% distorsion at 200W - taken from the intro of the article.

So it has already been done. His trick was to put a transistor on the output of the opamp to drive the valves.

The article can be purchased at www.electronicsworld.co.uk for 4.00.
.
Quote:
Hot audio power

Hot audio power Jeff Macaulay October 1995, p856
Having designed a 32W power amplifier with a full power bandwidth of 5Hz to 55kHz and 0.07% distortion at 20W,
combining valves and semiconductors can produce unexpectedly good performance.
See Circuit Ideas July 1996, p608

Add to Cart
.
Electronics World Magazine - ewmag.co.uk - Full list

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Old 6th November 2006, 05:27 AM   #28
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Hi Lineup,

I have both those CD's and I don't think the hybrid design is in there . I'll have a look at home though.

Cheers

Gert
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Old 6th November 2006, 05:45 AM   #29
lineup is offline lineup  Sweden
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Quote:
Originally posted by gbyleveldt
Hi Lineup,

I have both those CD's and I don't think the hybrid design is in there . I'll have a look at home though.
Sorry to hear
A little bit surprised, because it really should be on that CD #1


Elektor has had quite a few Tube Circuit and Hybrid projects.
Among these another hybrid,
but in this case a Headphone Amp Tube + Solid State hybrid amplifier.
Many of Elektor tube amplifier projects has been a bit unusual
not often using NOS Tubes, but mainstream easy-to-find ordinary tubes.


For example, there has been a number of different circuits
using ordinary tubes, triodes, at low voltage, in simple or little more complex ways,
to create and add tube like sound to your audio system chain.
I don't know how well this can work, though. But I have all those schematics.

Has often been in those
special issues of Elektor: Many small projects / circuit ideas' in one magazine.
Those small nice circuits, not 100% complete with PCB, are easily forgotten.
But I find them one of the best things that Elektor magazine can offer you.




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Old 6th November 2006, 11:11 AM   #30
Tyimo is offline Tyimo  Hungary
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Hi Gert and Lineup!

Quote:
I have both those CD's and I don't think the hybrid design is in there
Yes, it is not in the CD!

Greets:

Tyimo
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