transfo coupé au primaire

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A t-on un moyen de savoir les tensions secondaires afin de trouver un  



cdt

Daniel



Re: transfo coupé au primaire
Le Tue, 21 Jan 2014 20:38:17 +0100,



    Bonsoir,


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    en 6,3 V. Avec le tube de puissance, on peut estimer la tension de








    JKB

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Re: transfo coupé au primaire
Bonsoir JCB,

Comme tu le dis, c'est une chinoiserie, je vais regarder les tubes

pour les deux voies.



diodes... pas d'autres semi conducteurs.
je tacher de voir s'il y a des infos sur ces tubes.

 CDT

Daniel



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Re: transfo coupé au primaire
Le Tue, 21 Jan 2014 21:26:55 +0100,

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    Mon nom, c'est avec un 'K' ;-)

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    6H23, c'est une ECC88. Donc chauffage en 6,3 V ou 12,6 V. S'il y a



    russe.




    JKB

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Re: transfo coupé au primaire


2 fils et les mesures de l' alimentation sont possible




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Re: transfo coupé au primaire
Le Wed, 22 Jan 2014 09:22:01 +0100,



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    Pas compris.



    V pour obtenir un 12V (ou 12,6 en bricolant) pour les filaments.

    JKB

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Re: transfo coupé au primaire



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--  
capfree -

Re: transfo coupé au primaire
Le Wed, 22 Jan 2014 11:19:00 +0100,




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    conception chinoise).

    JKB

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Re: transfo coupé au primaire


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fonctions (transfo d'isolement).




j'ai un gros doute (comme tu le mentionnes).

--  
Sylvain

Re: transfo coupé au primaire
Bonjour,

Le transfo comporte deux enroulements secondaires, un pour le filament,  


a t'il une formule?

maxi d'anode est de 300V.
A vos avis, certains condos ont une tension de service de 250V, je pense  
qu'une tension comprise entre 100 et 200V pourrait suffire pour le faire  
fonctionner?

Merci pour vos interventions

CDT

Daniel




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Re: transfo coupé au primaire
Le Wed, 22 Jan 2014 15:04:49 +0100,

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    7V pour le filament, tu le grilles. 100V pour l'anode, pourquoi pas.
    Mais 9V pour la grille, j'ai un doute.

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    Visiblement, tu ne connais pas grand'chose aux tubes. Je n'ai pas le



    JKB

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Re: transfo coupé au primaire
Bonjour JKB, et tous



Electrical parameters:
Voltage
Heater 6.3V
Anode 100V
Grid   9
Current mA
Heater      310+/-25
Anode of each triode   15 +/- 5
Resistance in each cathode circuit : 680 ohms
Input resistance at 200hz 400 +300 -200

Limit values of operating conditions :
Voltage

Heater  7 V max  5.7 V  min
Anode  300
Anode in cut off valve 470
Anode ( pulse ) in cutt of valve 1000
Grid  -200
between cathode and heater 200




l'occurence celui des filaments parait une bonne soluce.
dans l'affirmative, j'ai en ma possession deux transfos 1 de 12 V  et 1 de  
15 V est judicieux ou bien il faut une tension moindre ?

cdt

Daniel









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Re: transfo coupé au primaire
Le Fri, 24 Jan 2014 18:40:30 +0100,

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    Attention, il y a un filament double avec point milieu. Il



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    Mouais.

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    Outch si ce sont des volts...

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    centaine de volts. Pas 200.



    avec des tubes d'origine chinoise et, en dehors de la 300B, les




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    faut au minimum traiter le transfo seul. Personnellement,








    visiblement mais ne le prends pas mal, tu n'as pas une grande
    habitude dans ce genre de choses). Avec les chinoiseries, on peut assez

    important parce transfo bas de gamme).

    Cordialement,

    JKB

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Re: transfo coupé au primaire
On 2014-01-25 10:23:30 +0100, JKB said:

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je comprends pas pourquoi vous vous prenez la tete ainsi alors qu'il  
suffit de debobiner le transfo sur quelques tours et de changer le  
fusible ...

--  

Jean-Yves.


Re: transfo coupé au primaire
Bonjour,

Cela parait facile mais je n'ai jamais fait cela !
au risque de tout ruiner...

cdt

Daniel




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Re: transfo coupé au primaire

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d'alimenter le transfo par l'enroulement 6,3 volts et de mesurer les  


Re: transfo coupé au primaire
On 2014-01-25 14:43:51 +0100, Daniel Ibarbia said:

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si ca peut faire moins peur :

http://www.youtube.com/watch?v4C%nGR-VMchc


Cordialement,
--  

Jean-Yves.


Re: transfo coupé au primaire

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vraiment trop de conneries.

Re: transfo coupé au primaire
Le Sat, 25 Jan 2014 13:42:47 +0100,

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    Parce que rien ne nous dit que c'est bien le fusible ou que le


    JKB

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=> http://loubardes.de-charybde-en-scylla.fr

Re: transfo coupé au primaire
Rebonjour,






si je le supprime ,  y a t'il un risque?
Ou bien faut il mettre un fusible avant?

Merci d'avance

Daniel




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