Question sur sortie casque

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Bonjour,

casque d'un smartphone ?
Merci

Re: Question sur sortie casque

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environ 1V efficace max sur 32 ohms.

Re: Question sur sortie casque
jfc :
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merci.

mon but : redresser avec un pont de diodes le courrant issu d'un son de

continu en 1V 100mA.
c'est jouable ?

Re: Question sur sortie casque
Bonjour,


Alf92 wrote:



Loi d'Ohm : 1/3231% mA.



Cordialement

Dominique

Re: Question sur sortie casque
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1 V eff / 32 ? =  31 mA eff


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1,414 - (2 x 0,6 V) => 214 mV / 32 ohms => 6,6 mA maxi


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Pour du continu il faudra au moins filtrer,


pour utiliser une capa N fois plus petite.


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Non : maximum = 0,214 V et 6,6 mA

Tu veux 100 mW alors que tu n'as que 1,4 mW


  


Re: Question sur sortie casque
Jean-Christophe :

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ouvert.




pourrait-on utiliser une carte comme celle-ci :
http://tinyurl.com/nruvpqv
http://www.cjoint.com/doc/15_07/EGekvlLmWic_capteur-son.jpg








http://www.cjoint.com/doc/15_07/EGekwdgdcic_schema1.gif




Re: Question sur sortie casque



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passe bande suivi d'un temps de retard.

bagottements du relais.








qu'on veut faire ?

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Re: Question sur sortie casque



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 facon suivante :


Si c'est le cas, vu le prix je peux en commander un et faire le test...
Merci  
--  


----Android NewsGroup Reader----
http://usenet.sinaapp.com/

Re: Question sur sortie casque



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https://arduinodiy.wordpress.com/2012/12/20/electret-microphone-amplifier/

comme la sortie du module n'est pas un "contact sec" (contact de relais  





produire.



Re: Question sur sortie casque
jfc :
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quel serait sa fonction ?



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ok

Re: Question sur sortie casque

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utiliser un transfo pour augmenter la tension
redresser
charger un condensateur
attendre :-)



Re: Question sur sortie casque
bilou :
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pourquoi pas, c'est une solution.

(pour l'assembler aucun pb en revanche :-)

Re: Question sur sortie casque
bilou wrote:
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Ou googler "pompe de charge"...

Den

Re: Question sur sortie casque

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je tenterais autre chose:

Polariser le transistor de commande du relais proche de la conduction.
Coupler directement l'audio du telephone via une capa sur la base du
transistor.

au alternance positives du signal audio.


--  
pas de turlututu. apres l'@robase

Re: Question sur sortie casque
Olivier B. :
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je sais souder mais je suis une bille en electronique.


Re: Question sur sortie casque

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je ressorte tout un binz de la remise.




--  
pas de turlututu. apres l'@robase

Re: Question sur sortie casque

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(allez un calot dirons nous!)

merci donc

Re: Question sur sortie casque
On Mon, 06 Jul 2015 09:29:18 +0200, bp


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http://www.cjoint.com/doc/15_07/EGgoPVlDWH1_detecteur-audio-relais.png

Le principe serait de placer le 1711 proche de la conduction tout en
gardant une marge suffiseante pour la plage de temperatude attendue,
l'objectif est que le signal audio provoque des conductions mono

capa.



A+

--  
pas de turlututu. apres l'@robase

Re: Question sur sortie casque


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