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Dartzeel amp schematic - build this?
Dartzeel amp schematic - build this?
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Old 3rd July 2019, 05:07 PM   #321
m0rten is offline m0rten  Norway
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Quote:
Originally Posted by erikovsky View Post
Hi,

Here I am having lots of fun with my friends. I shared PCBs that I designed with them, fairly good DartZeel design.

Just finished the soldering work, and preparing to make them sing!
They look awesome!
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Old 4th July 2019, 08:29 AM   #322
Erlend Sæterdal is offline Erlend Sæterdal  Denmark
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Join Date: Mar 2007
Dartzeel amp schematic - build this?
Quote:
Originally Posted by m0rten View Post
Hi!
Some time ago I bought a couple of the PCBs shown here earlier, from eBay possibly.

Attachment 766184

I also bought the servo board. Then nothing happend for a while, since other project took my time.
Recently I discovered a new (to me) PCB on Taobao where the servo was included on-board, togehter with 3 output pairs.

Attachment 766185

So now I have ordered a new pair of PCBs and may give it a try. If anyone is interested in my old set of boards including the servos, I will send them for free.

Cheers,
Morten
I would love to buy from there but do not understand anything off Chinese.
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Old 4th July 2019, 10:14 PM   #323
erikovsky is offline erikovsky
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Join Date: Sep 2015
Quote:
Originally Posted by m0rten View Post
They look awesome!
Thank you!
As you can see, there are 2 AVX supercapacitors on the PCB, so it's not NHB-108. Guess which circuit it is ?
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Old 9th July 2019, 08:13 PM   #324
Erlend Sæterdal is offline Erlend Sæterdal  Denmark
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Dartzeel amp schematic - build this?
Default Modification off Ali Clone

IMG_20190709_220209.jpg

Silmic II 220 UF And Kasei 100 UF.
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Old 11th July 2019, 05:49 AM   #325
lydlaug is offline lydlaug  Norway
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Join Date: Nov 2004
Location: Stavanger
Dartzeel amp schematic - build this?
Quote:
Originally Posted by m0rten View Post
Hi!
Some time ago I bought a couple of the PCBs shown here earlier, from eBay possibly.

Attachment 766184

I also bought the servo board. Then nothing happend for a while, since other project took my time.
Recently I discovered a new (to me) PCB on Taobao where the servo was included on-board, togehter with 3 output pairs.

Attachment 766185

So now I have ordered a new pair of PCBs and may give it a try. If anyone is interested in my old set of boards including the servos, I will send them for free.

Cheers,
Morten
Hi
I sent you a PM...
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Old 11th July 2019, 07:56 AM   #326
gaborbela is offline gaborbela  Canada
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Join Date: Sep 2005
Quote:
Originally Posted by erikovsky View Post
Hi,

Here I am having lots of fun with my friends. I shared PCBs that I designed with them, fairly good DartZeel design.

Just finished the soldering work, and preparing to make them sing!
Those PC boards will be available for DIY interests?
Thanks
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Old 11th July 2019, 12:12 PM   #327
gaborbela is offline gaborbela  Canada
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Join Date: Sep 2005
Quote:
Originally Posted by gaborbela View Post
Those PC boards will be available for DIY interests?
Thanks
Forget to attach the picture the mentioned PC boards
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File Type: jpg 59497825_2240192032910778_1547867876600315904_o.jpg (311.2 KB, 389 views)
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Old 16th July 2019, 11:57 AM   #328
erikovsky is offline erikovsky
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Join Date: Sep 2015
Quote:
Originally Posted by gaborbela View Post
Forget to attach the picture the mentioned PC boards
Hi all,

Well, I got several PM about the PCB releasing.
Right now, I am doing prototyping to ensure everything is alright.
As you can see, I designed an add-on module compatible with 458 main board.

The module includes filter caps, and also protection circuit/relay based on uPC1237, quite a nice protection IC.

About the thump, no idea about it right now, I did observe some in the simulation, but I guess prolonging relay off-ON time would just be fine.

Maybe I could start a GroupBuy here in DIYaudio? Please let me know if you're interested.

Anyway, please be patient, after the prototype board is good, I will start to release.

Best,

Erik
Attached Images
File Type: jpg PRO.jpg (412.5 KB, 300 views)
File Type: jpg 66337257_2281142682149046_5239748724028080128_n.jpg (80.6 KB, 311 views)
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Old 23rd July 2019, 09:21 AM   #329
Miros is offline Miros  Denmark
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Join Date: Aug 2004
Location: Vejle
There is an interesting factory visit at Dartzeel plant.
Michael Fremer, which own NHB-18NS and NHB-458 talks with Herve from Dartzeel.

There is some nice clips from the inside of the 458/468.

YouTube
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Old 13th August 2019, 07:54 AM   #330
m0rten is offline m0rten  Norway
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Join Date: Apr 2006
Location: Oslo
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Quote:
Originally Posted by erikovsky View Post
Thank you!
As you can see, there are 2 AVX supercapacitors on the PCB, so it's not NHB-108. Guess which circuit it is ?
Hehe, I'm not that familiar with these circuits... :-)
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