A small group buy of 2SJ74BL/2SK170BL - Page 15 - diyAudio
Go Back   Home > Forums > Commercial Sector > Group Buys

Group Buys Members group buys

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 29th November 2008, 07:45 AM   #141
housing is offline housing  Hong Kong
diyAudio Member
 
Join Date: Nov 2006
Last batch sold!
  Reply With Quote
Old 29th November 2008, 07:49 AM   #142
es44 is offline es44  Denmark
diyAudio Member
 
es44's Avatar
 
Join Date: Apr 2005
Location: Fredericia, DK
Well, of course there's a lot of "spread", and i have very few excactly matches. But if a few tens of uA is acceptable, then i have quite a few close ones
Funny thing is, that the 170's have idss between approx. 6.5 to 11, and the 74' generally 1.5-2 mA higher.
  Reply With Quote
Old 29th November 2008, 07:59 AM   #143
housing is offline housing  Hong Kong
diyAudio Member
 
Join Date: Nov 2006
Quote:
Originally posted by es44
Well, of course there's a lot of "spread", and i have very few excactly matches. But if a few tens of uA is acceptable, then i have quite a few close ones
Funny thing is, that the 170's have idss between approx. 6.5 to 11, and the 74' generally 1.5-2 mA higher.
A few tens of uA? That's better than 1% match!

Jfet are good devices but their characteristics are very variable. That makes you love them and hate them.
  Reply With Quote
Old 29th November 2008, 08:28 AM   #144
es44 is offline es44  Denmark
diyAudio Member
 
es44's Avatar
 
Join Date: Apr 2005
Location: Fredericia, DK
Quote:
Originally posted by housing


A few tens of uA? That's better than 1% match!

Jfet are good devices but their characteristics are very variable. That makes you love them and hate them.
Yes, i know the match is very tight on some of them, i'm just not used to Fet's, and therefore maybe a little too hysterical, hehe.
I do have a project coming up. A simple Riaa, and that will be my first experience with these little bugs. I hope to get a better understanding of what's going on when this is completed.

Simplistic NJFET RIAA

Once my GF is satisfied with her new apartment, i might get around to spend a little more time here.

All the best
Ebbe
  Reply With Quote
Old 29th November 2008, 08:43 AM   #145
AndrewT is online now AndrewT  Scotland
diyAudio Member
 
Join Date: Jul 2004
Location: Scottish Borders
Quote:
Originally posted by housing
Did you get a lot of closely matched quads?
I have just matched pairs from 200off each LSK170A & B & C (600 total).
I got lots of pairs but not a single quad from the Bs & Cs. The As have such a wide spread(2.6mA to 6.5mA=2.5:1) I am finding it galling just how low the yield is, of pairs, from a 200batch.

The problem is not just matching Idss, but also matching Yfs by testing for a match at lower currents as well.
__________________
regards Andrew T.
  Reply With Quote
Old 24th January 2009, 06:49 PM   #146
diyAudio Member
 
bear's Avatar
 
Join Date: Apr 2002
Location: New York State USA
Thanks for the shipment!

...sometimes I wish I was in Hong Kong to be able to get some of this kewl stuff in person...

_-_-bear
__________________
_-_-bear
http://www.bearlabs.com -- Btw, I don't actually know anything, FYI -- [...2SJ74 Toshiba bogus asian parts - beware! ]
  Reply With Quote
Old 9th July 2010, 04:02 PM   #147
GBL is offline GBL  United States
diyAudio Member
 
Join Date: Jul 2010
Have any more available? I have a large request>
  Reply With Quote
Old 16th July 2010, 04:23 PM   #148
Pocoyo is offline Pocoyo  Indonesia
diyAudio Member
 
Pocoyo's Avatar
 
Join Date: Jan 2007
Location: Indonesia
another group buy housing ?

  Reply With Quote
Old 17th July 2010, 11:26 AM   #149
housing is offline housing  Hong Kong
diyAudio Member
 
Join Date: Nov 2006
Quote:
Originally Posted by Pocoyo View Post
another group buy housing ?

Sorry. My supplier has no more stock long time ago.
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
FS: 2SJ74BL and 2SK170BL A'af Swap Meet 5 3rd December 2007 02:20 PM
Selling 90 pairs of Toshiba 2SJ74BL and 2SK170BL housing Swap Meet 6 16th February 2007 03:32 PM


New To Site? Need Help?

All times are GMT. The time now is 09:53 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2