Babbelfish J PCBs

[ANALOG GUY]

ALEPH J, that's sound great

My next project is 2N5462 instead of 2sj109BL.
I can't find anymore 2SJ109BL from my country, if I want to use +/- 15V power supply rails as ALEPHX how do I set CCS and OUTPUT CURRENT ?

tnx
analog guy

 

[Zen Mod]

Hello Oly ,

can i use 2SC 2837 + 2SA 1294 as output-transes
for your little amplifier ?

I am still waiting for a reply from the supplier
hope he answers my E-Mail .


Jürgen

Oly's smarter side here

I think that you can't drive BJTs with little Jfets;

but you can IGBTs

send few more emails to supplier!

 

[Zen Mod]

Re: ALEPH J, that's sound great

My next project is 2N5462 instead of 2sj109BL.
I can't find anymore 2SJ109BL from my country, if I want to use +/- 15V power supply rails as ALEPHX how do I set CCS and OUTPUT CURRENT ?

tnx
analog guy

just to be clear-you wanna make Aleph X with 2N5462 in input?
I can't reply ,just because that is little unclear (at least for my brain)

 

[audiotux]

Hi choky ,

how many SJ 109 BL do you need ?

Can you give my a concrete number ?

Thanks for the fast reply !

Jürgen

 

[Zen Mod]

Hi choky ,

how many SJ 109 BL do you need ?

Can you give my a concrete number ?

Thanks for the fast reply !

Jürgen

I'm sure that we can arrange up to 20-30 pieces of 109 and same amount of 389

I must talk with Oly and few friends too;

you can send me PM with details ,please....

chokyATneobee.net or via board mail button

tnx for fast reply,too


ps-IGBT is maybe way to another flawor of OLy's little amp......

 

[vangelis]

can i use 2SC 2837 + 2SA 1294 as output-transes
for your little amplifier ?

Hi Jürgen,

Sorry, it's theoreticaly possible, but not practicaly, because bipolar's need bias circuit for temperature stability. Also we need much more current from input circuit to drive output BTJ's. That assume extra followers and we live minimalist concept.

Oly

 

[audiotux]

Hi Oly ,

thanx for answering my question .
Forgot to ask what transes you used in your amp .
can you give me a little hint on the right transes ?
Btw i like your amp very much , its very simple .

Greetings from Germany

Jürgen

 

[vangelis]

Hi Oly ,

thanx for answering my question .
Forgot to ask what transes you used in your amp .
can you give me a little hint on the right transes ?
Btw i like your amp very much , its very simple .

Thanx Jürgen

I try to make simplest and smallest amp like Aleph-J, but in Erno Borbely style...I hope that will sounds like Aleph or some better...
I'm shure that is more temp. stable and has lower DC offset...

So, You can use any mosfet complementary pair like IRF140/9140, IRF240/9240 or similar....

My friend Choky will make prototype soon and compare it with Aleph-J...

Oliver

 

[ANALOG GUY]

I hope you-(nu)clear...only BABBELFISH J PCBS

I said about 2N5462 instead of 2SJ109 in BABBELFISH J
Could anyone post ALEPH J 30WPC (NEW ALEPH3) schematic ?

tnx
analog guy

 

[Zen Mod]

Re: I hope you-(nu)clear...only BABBELFISH J PCBS

I said about 2N5462 instead of 2SJ109 in BABBELFISH J
Could anyone post ALEPH J 30WPC (NEW ALEPH3) schematic ?

tnx
analog guy

http://www.diyaudio.com/forums/showthread.php?postid=862356#post862356

 

[Zen Mod]

Re: I hope you-(nu)clear...only BABBELFISH J PCBS

I said about 2N5462 instead of 2SJ109 in BABBELFISH J
Could anyone post ALEPH J 30WPC (NEW ALEPH3) schematic ?

tnx
analog guy

2N5462 looks promising....voltage-wise even better than 2SJ109
just be sure that you match them tight and they are thermally coupled-little blob of thermal paste between them and sort of wire ring to keep them together

 

[Zen Mod]

btw:
http://www.google.com/search?hl=en&lr=&as_qdr=all&q=+"2sj109"&btnG=Search

 

[jh6you]

If one is Babbelfish . . . wat is another name . . . ? Olish . . . ?

You made PCB only for yo yoself . . . ?

Regards
jh

 

[Zen Mod]

If one is Babbelfish . . . wat is another name . . . ? Olish . . . ?

You made PCB only for yo yoself . . . ?

Regards
jh

just be patient few days ,my boy.....
I have to make final tests

 

[Zen Mod]

If one is Babbelfish . . . wat is another name . . . ? Olish . . . ?

You made PCB only for yo yoself . . . ?

Regards
jh

jh6you-can you send me private mail?
I can't reach you via board mail button,just because you didn't enable it....

 

[steenoe]

Looking for those elusive 2SJ109's I have found a confirmed source The source is in the far east and what I would like to know is if somebody else are interested in getting hold of some of those specimen's? I would be ready to arrange a minor GB if there is interest? Only little but is, that the guy only wants to sell matched pairs. So 2SK389BL/2SJ109BL matched pairs is what I am talking about. He is asking 10 Euro a pair. On top of that comes postage from him to me, and from me to you plus the VAT I have to pay for the package, 25% here in DK!! Send me a mail if you want in. I will order a bunch for myself, whatever

Steen

 

[steenoe]

Minor correction, the matched pairs I can get are actually the V version!

Steen

 

[EUVL]

You can get matched pairs K389/J109BL's from Fibra Brandt. Save you importing, and you pay 16% German VAT. : )

There is also a source in America where you can just get J109's for $6. Just google. (I have not had it bookmarked.)

And unlimited supply of K389's from www.linearsystems.com.


Patrick

 

[steenoe]

Hi Patrick. If you have a source for the 2SJ109BL or V please send me a mail. I just looked at Fibra brandt with no luck! I placed orders with many companies listing those devices with no luck so far. Many companies has them listed on their website, but none were able to supply so far I have ordered from many companies lately.... but but but...... Its easy enough to have them listed, but another thing to actually send them!! If you can get them, please let me know

Steen

 

[Zen Mod]

?!

Hi Patrick. If you have a source for the 2SJ109BL or V please send me a mail. I just looked at Fibra brandt with no luck! I placed orders with many companies listing those devices with no luck so far. Many companies has them listed on their website, but none were able to supply so far I have ordered from many companies lately.... but but but...... Its easy enough to have them listed, but another thing to actually send them!! If you can get them, please let me know

Steen

http://www.fibra-brandt.com/index.c...escr=2SJ109-BL/TOS&sc_add_article=&sc_add_sc=