hello ,
i me stocked 2 tubes EL 504 for build amplificator 2 ways to EL504 .
i research montage to single ended ( for use 2 ways ) ?
i me research to Google.com , not good research completed to value schématic and spécification 🙁
sorry , me english is bad 🙄 .
http://www.diyaudio.com/forums/attachment.php?attachmentid=341336&stc=1&d=1365447815
me tested basic montage to 1 EL 504 to 34 V - 6.3 V 🙁 , not possible test , so possible error ?
i me stocked 2 tubes EL 504 for build amplificator 2 ways to EL504 .
i research montage to single ended ( for use 2 ways ) ?
i me research to Google.com , not good research completed to value schématic and spécification 🙁
sorry , me english is bad 🙄 .
http://www.diyaudio.com/forums/attachment.php?attachmentid=341336&stc=1&d=1365447815
me tested basic montage to 1 EL 504 to 34 V - 6.3 V 🙁 , not possible test , so possible error ?
Attachments
hello ,
tks for translate info , me looking the montage and looking specifique data .
😉
Why don't you try your luck at the Elektor (french) forum?
They are very activ with tube-amplifiers
Tubes audio - ELEKTOR.fr | Électronique : Analogique Numérique Embarqué Microcontrôleurs Audio Test Mesure
Mona
They are very activ with tube-amplifiers
Tubes audio - ELEKTOR.fr | Électronique : Analogique Numérique Embarqué Microcontrôleurs Audio Test Mesure
Mona
hello ,
me looking the forum " Elektor " , no link to amplificator to base EL 504 !
hehehe , me research is slow ...
no problem , so instrutive research to " Google " to Home Made .
thank 😉
hello ,
me build is up 🙂
me joint 2 pictures to 1 for " HT " & 1 for use " EL / PL 504 " .
http://www.diyaudio.com/forums/attachment.php?attachmentid=343503&stc=1&d=1366350441
http://www.diyaudio.com/forums/attachment.php?attachmentid=343504&stc=1&d=1366350441
so good for test no up for very good up power , me problem is charged for good use valve to datasheet !
me build is up 🙂
me joint 2 pictures to 1 for " HT " & 1 for use " EL / PL 504 " .
http://www.diyaudio.com/forums/attachment.php?attachmentid=343503&stc=1&d=1366350441
http://www.diyaudio.com/forums/attachment.php?attachmentid=343504&stc=1&d=1366350441
so good for test no up for very good up power , me problem is charged for good use valve to datasheet !
Attachments
hello ,
me build is stop it 🙁
so me transformator is very little for good use power , no probleme , the " solution " , HT to 180 V= is downgrade to good 90 V= 😉
me news build to short listing matérial .
2 PL 504 for connected to left and right to 90 V= , use 24 V~ to filament .
me power to 8 Ohms , is very little 😛 , use 0.0.. Watts RMS !!!
so not problem , is not drive installed for test .
me montage to screen 😉 .
slow build is good appréciate to search link for build .
me first build , i me newbie , no problem , so looking build for up me good build .
bye all 😉
ps : me test to video ...
2 PL 504 en stéreo - 80 V= - Vidéo Dailymotion
me build is stop it 🙁
so me transformator is very little for good use power , no probleme , the " solution " , HT to 180 V= is downgrade to good 90 V= 😉
me news build to short listing matérial .
2 PL 504 for connected to left and right to 90 V= , use 24 V~ to filament .
me power to 8 Ohms , is very little 😛 , use 0.0.. Watts RMS !!!
so not problem , is not drive installed for test .
me montage to screen 😉 .
slow build is good appréciate to search link for build .
me first build , i me newbie , no problem , so looking build for up me good build .
bye all 😉
ps : me test to video ...
2 PL 504 en stéreo - 80 V= - Vidéo Dailymotion
Attachments
hello all ,
a stable version with my new transformer, j has to re-modify my assembly(editing) for obtenri moves forward badly because I am not good at arithmetic complex, me the power of mwatts 500, him(it) takes(brings) out in 2 x 8 ohms, have there some more of work has to make put the assembly(editing) is stable and he(it) have there not of 12 AX 7 d to use in l imédiat.
Has bientot
a stable version with my new transformer, j has to re-modify my assembly(editing) for obtenri moves forward badly because I am not good at arithmetic complex, me the power of mwatts 500, him(it) takes(brings) out in 2 x 8 ohms, have there some more of work has to make put the assembly(editing) is stable and he(it) have there not of 12 AX 7 d to use in l imédiat.
Has bientot
Attachments
Two remarks,
you draw a loadline for triode-config,where your schematic shows a penthode-connection.
You can't use a 230/12V mainstransformer with a SE stage.The bais-current will saturate the core.
Mona
you draw a loadline for triode-config,where your schematic shows a penthode-connection.
You can't use a 230/12V mainstransformer with a SE stage.The bais-current will saturate the core.
Mona
hello ,
the build is upgrad for the test , the graphic is news .
and transformator " impédance " is 225 Ohms primary to 2 Ohms secondary ; me use 8 Ohms to speaker , not saturate voice !
no problem , so test for upgrad me build , only , no build transformator adapted .
tks 😉
the build is upgrad for the test , the graphic is news .
and transformator " impédance " is 225 Ohms primary to 2 Ohms secondary ; me use 8 Ohms to speaker , not saturate voice !
no problem , so test for upgrad me build , only , no build transformator adapted .
tks 😉
Attachments
hello All ,
me project to amplificator 2 X EL/PL 504 is stopped !
i me very dificulte problem to calculate curve charge and excursion for use 12 AX 7 / ECC 83 .
the project is std-by and news project to use ECL 805 is créate ( copy to base ECL 86 ) .
the schéma for news build ... so éasy build , me juste change component for test and use .
me test is good and me ajusted to test power to news project ...
4.16 W rms to 6 ohms impédance HP so 1 Khz , litle problem for max power !
many thanks for all , good day
me project to amplificator 2 X EL/PL 504 is stopped !
i me very dificulte problem to calculate curve charge and excursion for use 12 AX 7 / ECC 83 .
the project is std-by and news project to use ECL 805 is créate ( copy to base ECL 86 ) .
the schéma for news build ... so éasy build , me juste change component for test and use .
me test is good and me ajusted to test power to news project ...
4.16 W rms to 6 ohms impédance HP so 1 Khz , litle problem for max power !
many thanks for all , good day
Attachments
hello ,
i me resumed(took back) the assembly(editing) of my EL / PL 504, which is the risk d to use an audio transformer of 5 K on l anode
so only SE not use PP , me look EL 36 , not build SE 😕 ...
TKS for all 😉
i me resumed(took back) the assembly(editing) of my EL / PL 504, which is the risk d to use an audio transformer of 5 K on l anode
so only SE not use PP , me look EL 36 , not build SE 😕 ...
TKS for all 😉
I'm trying to do a 6P12P (EL504) single-ended amplifier. See my other posts, the load impedance 3.5K, supply voltage 290v, plate current of 60mA.
http://www.diyaudio.com/forums/tube...gs-new-tube-amps-please-give-staff-about.html
http://www.diyaudio.com/forums/tube...gs-new-tube-amps-please-give-staff-about.html
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Jean Michelle, choisi un vrai transformateur de sorti aproprie pour ta lampe avec simple PL504.. N'est pas possible a reussi avec trafo d'alimentation..
Translated: Choose a real output transformer appropriate for the single tube PL504. Not possible to succeed with power transformer.
My French is soooo rusty..
Translated: Choose a real output transformer appropriate for the single tube PL504. Not possible to succeed with power transformer.
My French is soooo rusty..
EL504 in triode mode has a very good curve, very unfortunately it is only G2 voltage 250v. Partial substitution models can reach 275V.
Depending on your point of view the output of the power transformer 185v you should use the 1000-ohm impedance output transformer, and the plate current is adjusted to 100mA, then the distortion of about 7%, power 3.2W
1k:8-ohm
185v power
Gate voltage-20v, anode-to-cathode voltage of about 165v, the load curve.If the impedance can be selected such that it is indeed the best. I use 3.5k-ohm, 285v out of frustration, just have these hands, and watched the curve pretty good, but some of the output power is small，only2.6W.
185v power
Gate voltage-20v, anode-to-cathode voltage of about 165v, the load curve.If the impedance can be selected such that it is indeed the best. I use 3.5k-ohm, 285v out of frustration, just have these hands, and watched the curve pretty good, but some of the output power is small，only2.6W.
Attachments
Last edited:
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