New D-amp idea

Tekko · 21st May 2006, 09:20 AM

I have dumped the other one with TL494 and came up with a new idea based on nitrate´s Madamp2 but modified to work with a gate driver.

This is what i was thinking about: http://user.faktiskt.se/Tekko_Tubeam...amp2%20alt.JPG Suggestions are welcome.

Eva · 21st May 2006, 01:04 PM

The link is wrong, the files on the server are PNG.

Also, do you really feel skilled enough to modify other's people work without having even tried the original version first?

Tekko · 21st May 2006, 03:25 PM

I spotted a problem in the design already, both signals to the fets are the same in phase, unless his discrete circuit has one inverting input but i doubt that as both look identical.

I have contacted him but i dont expect an answer as he havent been around since he posted his thread several months ago.

And no i dont feel skilled enuf, but u gotta do it if u wanna learn anything.

What do you think ? Actuallt i kinda doubt that my modded version will work, it is too darn simple

First out on the testbench is this: http://user.faktiskt.se/Tekko_Tubeam...mp2%20alt2.PNG

Tho i dunno which of the channels that should have the inverter on it, but trial and error to find out.

kartino · 22nd May 2006, 01:57 AM

Hi Tekko,

You don't need to use Nitrate's circuit. It is funny, because Nitrate's circuit are unique and your modification result make the circuit as very common non discrete class-D.

kartino · 22nd May 2006, 02:02 AM

And I agree with Eva, do you have enough skill?

Believe me it will not works.

Tekko · 22nd May 2006, 08:12 AM

Yup. I have abandoned the idea with tl494 but i am hooking it up with a CD4069UBC hex inverter (not a scmitt trigger but ledmania prolly used what he had laying around) to see if the delay of that could actually have made it work properly, or if it had to do with the scmitt trigger hysteris.

kartino · 22nd May 2006, 08:22 AM

Hi Tekko,

Be serious with one circuit please.... I know that the information here is free.... but please do not let us down because we will happy to see your good result too...

Tekko · 22nd May 2006, 09:35 AM

Now it runs nice and cool, but it needs a real speaker with a crossover to work

The fets stay cool but the output inductor heats up.

kartino · 23rd May 2006, 12:26 AM

Hi,

Could you post the schematic please....

Tekko · 23rd May 2006, 07:32 AM

Schemo:

http://user.faktiskt.se/Tekko_Tubeam...0schematic.JPG

21st May 2006, 09:20 AM	#1
Tekko diyAudio Member Join Date: Jan 2005	New D-amp idea I have dumped the other one with TL494 and came up with a new idea based on nitrate´s Madamp2 but modified to work with a gate driver. This is what i was thinking about: http://user.faktiskt.se/Tekko_Tubeam...amp2%20alt.JPG Suggestions are welcome.

21st May 2006, 01:04 PM	#2
Eva diyAudio Member Join Date: Oct 2003 Location: Near the sea	The link is wrong, the files on the server are PNG. Also, do you really feel skilled enough to modify other's people work without having even tried the original version first? __________________ I use to feel like the small child in The Emperor's New Clothes tale

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Different pre amp idea	bartek	Solid State	3	25th March 2008 03:42 PM
I really have no idea what I'm doing here...	d to the g	Multi-Way	10	7th March 2008 06:04 PM
P.S idea	noyan	Power Supplies	15	19th December 2007 08:50 PM
An idea! Fully balanced TDA1541A DAC idea. Please comment!	cartman	Digital Source	8	17th July 2007 08:18 AM
Just an idea	bob123	Subwoofers	4	9th April 2006 02:28 PM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

21st May 2006, 03:25 PM	#3
Tekko diyAudio Member Join Date: Jan 2005	I spotted a problem in the design already, both signals to the fets are the same in phase, unless his discrete circuit has one inverting input but i doubt that as both look identical. I have contacted him but i dont expect an answer as he havent been around since he posted his thread several months ago. And no i dont feel skilled enuf, but u gotta do it if u wanna learn anything. What do you think ? Actuallt i kinda doubt that my modded version will work, it is too darn simple First out on the testbench is this: http://user.faktiskt.se/Tekko_Tubeam...mp2%20alt2.PNG Tho i dunno which of the channels that should have the inverter on it, but trial and error to find out.

22nd May 2006, 01:57 AM	#4
kartino diyAudio Member Join Date: Feb 2005 Location: Gunungkidul Indonesia	Hi Tekko, You don't need to use Nitrate's circuit. It is funny, because Nitrate's circuit are unique and your modification result make the circuit as very common non discrete class-D.

22nd May 2006, 02:02 AM	#5
kartino diyAudio Member Join Date: Feb 2005 Location: Gunungkidul Indonesia	And I agree with Eva, do you have enough skill? Believe me it will not works.

22nd May 2006, 08:12 AM	#6
Tekko diyAudio Member Join Date: Jan 2005	Yup. I have abandoned the idea with tl494 but i am hooking it up with a CD4069UBC hex inverter (not a scmitt trigger but ledmania prolly used what he had laying around) to see if the delay of that could actually have made it work properly, or if it had to do with the scmitt trigger hysteris.

22nd May 2006, 08:22 AM	#7
kartino diyAudio Member Join Date: Feb 2005 Location: Gunungkidul Indonesia	Hi Tekko, Be serious with one circuit please.... I know that the information here is free.... but please do not let us down because we will happy to see your good result too...

22nd May 2006, 09:35 AM	#8
Tekko diyAudio Member Join Date: Jan 2005	Now it runs nice and cool, but it needs a real speaker with a crossover to work The fets stay cool but the output inductor heats up.

23rd May 2006, 12:26 AM	#9
kartino diyAudio Member Join Date: Feb 2005 Location: Gunungkidul Indonesia	Hi, Could you post the schematic please....

23rd May 2006, 07:32 AM	#10
Tekko diyAudio Member Join Date: Jan 2005	Schemo: http://user.faktiskt.se/Tekko_Tubeam...0schematic.JPG

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)