Profet Amplifier - Page 5

miklos · 4th February 2009, 12:57 PM

Looking good Gabor. I wonder what you mean with Class D MosFet, I think the term Class D is referred to a switch mode amplifier.

gaborbela · 4th February 2009, 01:06 PM

HI
The mosfet is Lateral type .
The company main product the class D amplifier was at the beginning . And now they call their mosfet Class D .
But really nothing to do with Class D .
You can find out more if you Google them or they even sell assembled kits on the forum .
Here is some info http://classd.ltd.uk/home.php
Greetings .

miklos · 4th February 2009, 01:34 PM

I see, the company called Class D manufacturing these devices ACD100NSD/ACD102PSD. How well the N and P channel devices are matched?

gaborbela · 4th February 2009, 02:02 PM

HI
I don't know , all I know after Renesans took over the manufacturing the Hitachi lateral mosfets I do not like them .
I never tested yet .
A have some 6 pair from Class D but I didn't did any test yet .
Before I used EXICON those are one of the best lateral if not the best .
I tested the Renesans in the ProFet , after I switch to Exicon heaven and earth the difference between them in favor of the Exicon .
At the class D company they wrote me these are close to the quality of Exicon .
I will see when I do some test .
But I need to make a enclosure for the amp after I can do some tests .
Greetings

miklos · 4th February 2009, 02:42 PM

The enclosure is the hardest part of the diy.
Here's one of mine, cost me ca. 250 bucks and a lot of elbow grease.

wojtek5001 · 4th February 2009, 06:30 PM

Quote:

Originally posted by gaborbela
...
The Iq to set up 400mA for the Grand Mos .
..... [/B]

400mA for one device or 400mA for whole amp?

I don't think about built this amp for now. I'am just curious. My problem with such amp is high idle current. With 2x50V, 400mA gives 40W - quite high. There is no any thermal feedback.
Also good mosfet are not cheap - another small problem.

But I cant stop thinking about this amp ...

gaborbela · 4th February 2009, 06:40 PM

HI
I need to correct you .
These amplifier 100W/Chanel . 400mA /channel the Iq .
So that not so much .Only a couple Watt in Class A .
There are many amplifier give only 10W per side and biased in class A some of them close to 3A .

gaborbela · 4th February 2009, 06:48 PM

Hello
I forget also U can run the amp in Class A/B mode .
These is a very high quality amp .
But if you want something more simple take a look at the Zenquito .From the same designer .
You can bias that in pure Class A or A/B to .
Much simple less parts and great sound if U use similar components like many DIY-ers did in France .http://pagesperso-orange.fr/jm.plantefeve/theo.html
You can open the site in English if you Google Zenquito DIY amplifier .
Regards

Xoc1 · 5th February 2009, 02:50 PM

Hi
I too amp very intrested in the performance of the Class D lateral mosfets
They are made by Semefab. Semefab also make the Exicon and Magnatec Lateral Mosfets
I came across the Semebab specifications for the acd100nsd and acd101ndd Mosfets and it is different to the spec published by Class D.
You can find it here

http://www.semefab.com.cn/acd100nsd.pdf

http://www.semefab.com.cn/acd102psd.pdf

emanuel_hr · 1st March 2009, 06:40 PM

Hello, I am too interested in the GrandMos. I have a couple of Exicon pairs and I think I would like to use them in a simple topology like this one. I'd like to know if there are any stability issues with it and how well it performs.
Thanks in advance.

4th February 2009, 12:57 PM	#41
miklos diyAudio Member Join Date: Jul 2004 Location: toronto	Looking good Gabor. I wonder what you mean with Class D MosFet, I think the term Class D is referred to a switch mode amplifier. __________________ miklos

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4th February 2009, 01:06 PM	#42
gaborbela diyAudio Member Join Date: Sep 2005	HI The mosfet is Lateral type . The company main product the class D amplifier was at the beginning . And now they call their mosfet Class D . But really nothing to do with Class D . You can find out more if you Google them or they even sell assembled kits on the forum . Here is some info http://classd.ltd.uk/home.php Greetings .

4th February 2009, 02:02 PM	#44
gaborbela diyAudio Member Join Date: Sep 2005	HI I don't know , all I know after Renesans took over the manufacturing the Hitachi lateral mosfets I do not like them . I never tested yet . A have some 6 pair from Class D but I didn't did any test yet . Before I used EXICON those are one of the best lateral if not the best . I tested the Renesans in the ProFet , after I switch to Exicon heaven and earth the difference between them in favor of the Exicon . At the class D company they wrote me these are close to the quality of Exicon . I will see when I do some test . But I need to make a enclosure for the amp after I can do some tests . Greetings

4th February 2009, 06:40 PM	#47
gaborbela diyAudio Member Join Date: Sep 2005	HI I need to correct you . These amplifier 100W/Chanel . 400mA /channel the Iq . So that not so much .Only a couple Watt in Class A . There are many amplifier give only 10W per side and biased in class A some of them close to 3A .

4th February 2009, 06:48 PM	#48
gaborbela diyAudio Member Join Date: Sep 2005	Hello I forget also U can run the amp in Class A/B mode . These is a very high quality amp . But if you want something more simple take a look at the Zenquito .From the same designer . You can bias that in pure Class A or A/B to . Much simple less parts and great sound if U use similar components like many DIY-ers did in France .http://pagesperso-orange.fr/jm.plantefeve/theo.html You can open the site in English if you Google Zenquito DIY amplifier . Regards

5th February 2009, 02:50 PM	#49
Xoc1 diyAudio Member Join Date: Nov 2008 Location: Devon UK	Hi I too amp very intrested in the performance of the Class D lateral mosfets They are made by Semefab. Semefab also make the Exicon and Magnatec Lateral Mosfets I came across the Semebab specifications for the acd100nsd and acd101ndd Mosfets and it is different to the spec published by Class D. You can find it here http://www.semefab.com.cn/acd100nsd.pdf http://www.semefab.com.cn/acd102psd.pdf

1st March 2009, 06:40 PM	#50
emanuel_hr diyAudio Member Join Date: Feb 2008	Hello, I am too interested in the GrandMos. I have a couple of Exicon pairs and I think I would like to use them in a simple topology like this one. I'd like to know if there are any stability issues with it and how well it performs. Thanks in advance.

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