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Dartzeel amp schematic - build this?
Dartzeel amp schematic - build this?
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Old Today, 01:19 PM   #1631
domenico80 is online now domenico80  Italy
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ok.
I do not know what could or could turn in the brain of Mr. Delatraz, I just say that if you like the 108, you can replicate it as you see it and, afterwards, proceed step by step as I did.
Then you can go further, again as I / we did, another input voltage generator, 4 pairs, polarization changes. stabilized power supply etc etc.
but in the face of such work, then, I go in the other direction with another scheme where I can use LT3092 and have an objective increase in performance.
Ah, I forgot that the 2 signal ground resistors, the ones with the supercap, to understand, if I replace them with films and foils I have interesting results.
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Old Today, 01:27 PM   #1632
domenico80 is online now domenico80  Italy
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@analog_sa
mah,
when I see
- similar extra Dartzeel variations
- the zener as a stabilizer of the entrance
- the Wima in series entry
- the ceramics as in my PCB, identical to the original, I am increasingly convinced that the 108 is a summary of a few but confused ideas.
But will it really like it?
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Old Today, 02:28 PM   #1633
bogdan_borko is online now bogdan_borko  Serbia
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Quote:
Originally Posted by analog_sa View Post
And here is Damir's circuit as a possible replacement for the diamond.
And it works in real life without thermal runaway? I doubt that.
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Old Today, 03:08 PM   #1634
analog_sa is offline analog_sa  Europe
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Dartzeel amp schematic - build this?
Quote:
Originally Posted by bogdan_borko View Post
And it works in real life without thermal runaway?
That is a pretty good question. You reckon having all the transistors sharing the same sink won't be enough? Because of the darlington?
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Old Today, 03:26 PM   #1635
bogdan_borko is online now bogdan_borko  Serbia
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Quote:
Originally Posted by analog_sa View Post
That is a pretty good question. You reckon having all the transistors sharing the same sink won't be enough? Because of the darlington?
Output bjts without degeneration even with vbe multiplier for thermal tracking are very tricky task. Maybe with higher value of base stoppers like in the original circuit...
It sould be tried in real life with lot of experimentation.
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