Augmenter le gain d'un ampli jfet

Do you have a question? Post it now! No Registration Necessary

Threaded View
Dannydan Contact options for registered users 's Avatar (by Gravatar) posted on
January 1, 2012, 7:03 pm
rate this thread
Reply to this post Reply Tag this thread to save it in your account Save
Bonsoir/bonjour à toutes et à tous et bonne année.

Je cherche à augmenter le gain, sans ajouter un deuxième transistor, sur ce
montage :

http://www.buildmyelectricguitar.com/electric-guitar/misc-electric-guitar/piezo-jfet-preamplifier-mpf102.html

Est ce possible à faire ?

Merci de vos éclairage.

Daniel




Other Related Threads
jj Contact options for registered users 's Avatar (by Gravatar) posted on
January 1, 2012, 8:19 pm
Permalink
Reply to this post Reply Tag this thread to save it in your account Save
Re: Augmenter le gain d'un ampli jfet
Le 01/01/2012 20:03, Dannydan a écrit :
Quoted text here. Click to load it
http://www.buildmyelectricguitar.com/electric-guitar/misc-electric-guitar/piezo-jfet-preamplifier-mpf102.html
Quoted text here. Click to load it

oui, logiquement en augmentant la R sur le drain, reste à vérifier la
polarisation.

également en utilisant un jfet avec un gain plus élevé, idem, attention
à la polarisation.

JJ

Other Related Threads
marc Contact options for registered users 's Avatar (by Gravatar) posted on
January 2, 2012, 9:59 pm
Permalink
Reply to this post Reply Tag this thread to save it in your account Save
Re: Augmenter le gain d'un ampli jfet

Quoted text here. Click to load it
guitar/piezo-jfet-preamplifier-mpf102.html
Quoted text here. Click to load it

Le mpf 102, c'est le meme qu'on utilise sur un Sony 2001D/2010D:
http://home.comcast.net/~snarayan/misc/sw/q303_board.html

le meme conseil?

On retrouve le probleme avec:
http://www.google.com/search?client=ubuntu&channel=fs&q=MPF-102++sony+2010&ie=utf-8&oe=utf-8

--
--
What's on Shortwave guide: choose an hour, go!
http://shortwave.tk
We've slightly trimmed the long signature. Click to see the full one.

Site Timeline