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Old 12th June 2013, 11:23 AM   #91
EUVL is offline EUVL  Europe
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I have a few PMs asking me about availabilities of devices, mechanics and PCBs etc.

As you can see, we have not even finish outr own examples.
And until we have, the design is just that, a design, not yet verified.

We shall of course let you know when it is fully finished.
And then (and only then) if there would be sufficient interest, we'll make a project available for subscription.
I cannot promise a deadline, but it is more likely to be after September than before.


Thank you for your interest and patience,
Patrick
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Old 29th October 2013, 07:19 PM   #92
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just a bump and to subscribe.....
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Old 31st October 2013, 03:58 AM   #93
EUVL is offline EUVL  Europe
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I am so terribly sorry to have kept you waiting.
All my electronics are tested and ready to wire.
But after more than 6 months I still have no mechanical parts.

I am as disappointed as you are, but the factory is there to make a living, not hobbies.
And business is exceptionally good this year, which means hobbies has STILL a long wait.




Patrick
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Old 3rd November 2013, 09:54 AM   #94
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Don't worry Patrick - good things take time!! And also, gotta keep the day job on top.

You mentioned in a few threads that the lovoltechs are easy to get - you must have a preferred seller that pre-matches Vgs?

Fran
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Old 3rd November 2013, 10:25 AM   #95
EUVL is offline EUVL  Europe
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You can get them from here :

LU1014D JFET's

But they are not matched at temperature and under the bias we are using.
Instead they are matched by the Nelson Pass method for his Zen V9 (I think 1.3A if I am not wrong).

What we did was to purchase a few hundred pieces from them pre-matched their way.
Then we re-matched them again in the DAO triode circuit, at heat sink temperature.

When we are ready to offer this as a public project, you will be able to get properly matched devices from us.
Of course you are always welcome to buy from them and then fine match your own.




Patrick
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Old 3rd November 2013, 10:35 AM   #96
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Quote:
Originally Posted by EUVL View Post
Part 2 -- Circuitry.


Patrick

.
Very interesting. Thanks!
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Old 12th March 2014, 11:05 AM   #97
EUVL is offline EUVL  Europe
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Some miracle happened yesterday.

Mark has finished his first prototype after 2 years +.
Clean square waves to 20kHz (limited by his func gen), with or without load.
The case is special version for his own use (wall hanging, volume control, etc.)




Patrick
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Old 12th March 2014, 11:53 AM   #98
bkdog is offline bkdog  Australia
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Patrick & Mark - this is so sweet! Looking forward to the time of release.
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Old 12th March 2014, 01:03 PM   #99
Stixx is offline Stixx  Germany
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Sweet! Waiting to see how this continues...
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Old 12th March 2014, 01:08 PM   #100
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Looks great - how about the sound?
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