Topology Federmann, HQQF-55 ... - Page 6

Allen Wright · 2nd November 2009, 08:16 PM

The use of N channels in both sides of the schematic is a TYPO - he may be good but he can't defeat the laws of physics.

Regards, Allen (Vacuum State)

Federmann · 2nd November 2009, 08:36 PM

hi Greg Erskine,

I did everything described in three articles, there are two.

First How to 3D Eagle Basic installation of Eagle, Eagle 3D and Pov Ray. There are some forms package, they will come in handy when you do not know.

Second As 3D Eagle again Faultfinding

Regards

anatech · 2nd November 2009, 08:57 PM

Hi Federmann,
I tried using Google translation with your web site, and ended up with a spinning head as a result.

When you post, would you please refer to documents and information in English? Most of your work is somewhat lost on me due to the language barrier. I fear most of our membership may be in a similar position - unable to understand what you are doing.

One part on your site refers to a transistor type. I guess it's a power mosfet made up from many smaller transistors inside. Can you elaborate please? My experience with current mosfets is that no source resistor = blown amplifier.

-Chris

PMA · 2nd November 2009, 09:01 PM

We should ask if he has built the amplifier shown.

Greg Erskine · 2nd November 2009, 09:40 PM

Quote:

Originally Posted by Federmann

hi Greg Erskine,

I did everything described in three articles, there are two.

First How to 3D Eagle Basic installation of Eagle, Eagle 3D and Pov Ray. There are some forms package, they will come in handy when you do not know.

Second As 3D Eagle again Faultfinding

Regards

Hi Federmann,

Thanks for the info. I have looked at your links and done my best to follow by looking at the pictures. I was wondering if you have used this method to generate you ini file. It creates a flythru rather than just rotating the 3D model.

en:eagle3d:documentation [www.matwei.de]

regards

anatech · 3rd November 2009, 01:45 AM

Hi Pavel,
Well, it looks like construction has begun. I didn't see anything looking done though. An English version on his web site would help there, but I'm guessing you know much more than most of us here.

-Chris

Ultima Thule · 3rd November 2009, 02:29 AM

Besides the idea of putting N-ch devices in the lower part it's also quite interesting way how they are implemented as we know FETs have an intrinsic diode... *BOOM*
I could understand under time pressure if one didn't have a P-ch handy in the library to get the D and S right for P-ch one have to put the N-ch upside down to get the layout correct, but the designer with forty years of experience clearly told us he wanted to use N-ch makes me wonder if this all is a hoax, time is the truth teller....

cbdb · 3rd November 2009, 03:32 PM

Quote:

as we know FETs have an intrinsic diode... *BOOM*

Only JFETs

PMA · 3rd November 2009, 03:49 PM

Quote:

Originally Posted by cbdb

Only JFETs

Wrong.

Federmann · 3rd November 2009, 05:37 PM

2nd November 2009, 08:57 PM	#53
anatech diyAudio Moderator Join Date: Jun 2004 Location: Georgetown, On	Hi Federmann, I tried using Google translation with your web site, and ended up with a spinning head as a result. When you post, would you please refer to documents and information in English? Most of your work is somewhat lost on me due to the language barrier. I fear most of our membership may be in a similar position - unable to understand what you are doing. One part on your site refers to a transistor type. I guess it's a power mosfet made up from many smaller transistors inside. Can you elaborate please? My experience with current mosfets is that no source resistor = blown amplifier. -Chris __________________ "Just because you can, doesn't mean you should" © my Wife

2nd November 2009, 09:01 PM	#54
PMA diyAudio Member Join Date: Apr 2002 Location: Prague, Kitakyushu, Fukuoka	We should ask if he has built the amplifier shown. __________________ Pavel Macura, consultant http://cz.linkedin.com/pub/pavel-macura/4/783/637

3rd November 2009, 01:45 AM	#56
anatech diyAudio Moderator Join Date: Jun 2004 Location: Georgetown, On	Hi Pavel, Well, it looks like construction has begun. I didn't see anything looking done though. An English version on his web site would help there, but I'm guessing you know much more than most of us here. -Chris __________________ "Just because you can, doesn't mean you should" © my Wife

3rd November 2009, 02:29 AM	#57
Ultima Thule diyAudio Member Join Date: Jan 2004 Location: Koskenkorva Land	Besides the idea of putting N-ch devices in the lower part it's also quite interesting way how they are implemented as we know FETs have an intrinsic diode... BOOM I could understand under time pressure if one didn't have a P-ch handy in the library to get the D and S right for P-ch one have to put the N-ch upside down to get the layout correct, but the designer with forty years of experience clearly told us he wanted to use N-ch makes me wonder if this all is a hoax, time is the truth teller.... __________________ "If transistors are blueberries and FETs are strawberries, then tubes must be.. pears" Michael 29th January 2010

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2nd November 2009, 08:16 PM	#51
Allen Wright R.I.P. Join Date: Dec 2001 Location: Schaffhausen Switzerland	The use of N channels in both sides of the schematic is a TYPO - he may be good but he can't defeat the laws of physics. Regards, Allen (Vacuum State)

2nd November 2009, 08:36 PM	#52
Federmann diyAudio Member Join Date: Oct 2009 Location: Kunovice - Moravia	hi Greg Erskine, I did everything described in three articles, there are two. First How to 3D Eagle Basic installation of Eagle, Eagle 3D and Pov Ray. There are some forms package, they will come in handy when you do not know. Second As 3D Eagle again Faultfinding Regards

3rd November 2009, 05:37 PM	#60
Federmann diyAudio Member Join Date: Oct 2009 Location: Kunovice - Moravia

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