dac I/V convertion with very low distortion - Page 33 - diyAudio
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Old 23rd August 2012, 11:46 AM   #321
smms73 is offline smms73  Portugal
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I only have seen the datasheet from fairchild, and looks worse than the NXP.

And yes i´m talking about early voltage.
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Last edited by smms73; 23rd August 2012 at 11:48 AM. Reason: error
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Old 23rd August 2012, 11:55 AM   #322
EUVL is offline EUVL  Europe
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NXP has good stuff.
Even for JFETs they have better specs than Fairchild.

I buy NXP whenever I can.


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Old 23rd August 2012, 12:14 PM   #323
smms73 is offline smms73  Portugal
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I have a curve tracer.
i will try some transistors at 10ma to 20ma to see the better one.
And to compare data with the spice models.
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Old 23rd August 2012, 12:17 PM   #324
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Quote:
Originally Posted by smms73 View Post
My hammer is bigger than yours
So, is this a race?

I can slap some TO-3's in there.... juice them up to 100mA or so...
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Old 23rd August 2012, 12:35 PM   #325
Shinja is offline Shinja  Japan
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I am not sure,
baxandall super pair or some circuit can suppress the current fluctuations caused by early effect and Cob, can't it?
smms73's first circuit seems returns them to output too.
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Old 23rd August 2012, 02:53 PM   #326
MiiB is offline MiiB  Denmark
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17 mA will give you a function time of app.. 8-10 hours on at 9V rechargeable battery...But of course some kind of charging system could be made.. Normally I would defer any switches in the signal path....I am not really sure this is in the signal-path, as it's floating around...
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Old 23rd August 2012, 03:42 PM   #327
smms73 is offline smms73  Portugal
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Quote:
Originally Posted by Shinja View Post
I am not sure,
baxandall super pair or some circuit can suppress the current fluctuations caused by early effect and Cob, can't it?
smms73's first circuit seems returns them to output too.
I have try the baxandall super pair, and it works, its a nice concept too.

i dont have time right now, but later i will talk about this.

thanks Shinja
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Old 23rd August 2012, 03:55 PM   #328
smms73 is offline smms73  Portugal
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the CEN baxandall super pair.

this is only a test circuit, just to give you an idea, not a final circuit.
Attached Images
File Type: jpg super_par.jpg (47.5 KB, 260 views)
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Old 23rd August 2012, 04:34 PM   #329
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Circuit ideas are popping up here like flowers in spring ! I really have fun. This is very different then other threads where is only talk. I appreciate it.
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Old 24th August 2012, 10:24 AM   #330
smms73 is offline smms73  Portugal
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This is ZEN like topology
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File Type: jpg ZEN1.jpg (65.6 KB, 226 views)
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