I'm searching on the forum how to match transistor-jfet-mosfet.
I would like to know...if it is possible do it on your own.
If so, is there any circuit test that i can build and that work fine for the purpose?
hope to receive ...as everytime...your good advice!
best regards,
Stefano.
I would like to know...if it is possible do it on your own.
If so, is there any circuit test that i can build and that work fine for the purpose?
hope to receive ...as everytime...your good advice!
best regards,
Stefano.
which FETS are you trying to match?
is there a particular amp you are going to build?
Check out www.passdiy.com and under the Articles section there is a paper on matching FETS.
is there a particular amp you are going to build?
Check out www.passdiy.com and under the Articles section there is a paper on matching FETS.
well actually i have to repair my electrocompaniet ECI-4 and i have to replace the transistor (driver and output stage).
Since the configuration is in differential i would like to replace...since i'm have to....with complementary matched type.
The devices that i have to match are BJT (motorola MJL3281A and 1302A and Toshiba 2sa1350y and 2sc3421y).....which i still have to find somewhere...and i hope somebody could help me.
I also found them on the phoenix-components.com...but they since to supply only the industries.
Since the configuration is in differential i would like to replace...since i'm have to....with complementary matched type.
The devices that i have to match are BJT (motorola MJL3281A and 1302A and Toshiba 2sa1350y and 2sc3421y).....which i still have to find somewhere...and i hope somebody could help me.
I also found them on the phoenix-components.com...but they since to supply only the industries.
ciao, parliamo in italiano! basta che gli mandi una corrente fissa e calcoli la differenza di potenziale con il mos collegato a diodo,
puoi usare un lm317 in modalita sorgente di corrente e fare le misurazioni, mandagli 500ma o più!
per fare questo devi dissipare il317 e il mos, se vuoi altro fammi sapere a x84andrea@libero.it
puoi usare un lm317 in modalita sorgente di corrente e fare le misurazioni, mandagli 500ma o più!
per fare questo devi dissipare il317 e il mos, se vuoi altro fammi sapere a x84andrea@libero.it
If you're talking about basic VGS matching, I saw suggestions in Nelson's DIY op amp article. I have a drawing if you want it.
Since they're bipolars, Vgs isn't applicable, unfortunately. That's for FETs. The equivalent measurement for bipolars--Vbe--is quite consistent.
What parameter needs to be matched? Beta? If so, to what spec?
Grey
What parameter needs to be matched? Beta? If so, to what spec?
Grey
thanks guys for the posts.
I would like to have a little circuit test for matching Bipolar Transistor (mostly) and also have a circuit ...that i guess it's different... for MOS and FET.
I mean.....what do the companies use for selecting their componens? does anybody know it?
I would like to have a little circuit test for matching Bipolar Transistor (mostly) and also have a circuit ...that i guess it's different... for MOS and FET.
I mean.....what do the companies use for selecting their componens? does anybody know it?
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