Roender's FC-100 Rev.1 Group-Buy - Page 36 - 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 4th October 2012, 06:02 PM   #351
diyAudio Member
 
Rudi_Ratlos's Avatar
 
Join Date: Jun 2009
Location: Hamburg / Germany
Gentlemen, I am through with matching and packaging the NJLs.
The Hfe matching results are very, very good and all (!!) of you have triples with a deviation of <= 1%!

Find attached an image, how I packaged them.
I have taken my own NJLs as an example.

Each of you will get 2 boxes with 6 transistors and 1 box with 4 transistors.
The boxes with the 6 transistors contain a matched triple of NJL0281 and a matched triple of NJL0302 for the use of 1 AMP-PCB
and have a label consisting of 3 lines:

- your nickname
- to be used for PCB1 (the left channel for example) or PCB2 (the right channel)
- a note which ThermalTrack diode has to be disabled (jumpered)

For example: on my PCB1 the diode of the Pnp NJL0302 transistor with number 27 on its back shall be bypassed;
on PCB2 the diode of the Pnp NJL0302 transistor with number 152 shall be bypassed.

The box with only your nickname on it contains the "spare transistors", 2 of each.

Best regards - Rudi_Ratlos

P.S. @TAGHEUER and JAZZZZ: you will receive 6 boxes of course, since you ordered 4 PCBs.
Attached Images
File Type: jpg Heute 022.jpg (211.1 KB, 330 views)
  Reply With Quote
Old 4th October 2012, 06:15 PM   #352
Just DIY!
diyAudio Member
 
pinnocchio's Avatar
 
Join Date: Sep 2010
Location: Montreal
Very nice!

Thanks
Do
__________________
PREAMPs : AMB α10 + JC-80 clone | Balanced DCB1 | LDR3x | AMPs: AMB β24 | Aleph 5 | VSSA | ML-2 | Fetzilla | Telos 390 Clone | My_Ref FE
DACs : TPA Buffalo II + OPC's NTD1 I/V | TPA OPUS + IVY III Speakers : Jim Holtz Statements | Astasia SD | Tubasson Mark 2
  Reply With Quote
Old 5th October 2012, 05:51 AM   #353
roender is offline roender  Romania
diyAudio Member
 
roender's Avatar
 
Join Date: Sep 2006
Hi Rudi,

Would you please tell me what's the batch number for your NJLs? How close N to P are matched? I like to know how good the fab process is now because they used to produce this series in 10% matching between N and P devices

Kind regards,
Mihai
  Reply With Quote
Old 5th October 2012, 07:19 AM   #354
diyAudio Member
 
Rudi_Ratlos's Avatar
 
Join Date: Jun 2009
Location: Hamburg / Germany
Mihai,

normally (in the past) the digit "0" in OnSemi's NJL0 (MJL0, ...) warrants <=10% deviance of the current production by the manufacturing process.
(Allthough I do not see this hint in the NJW0 - datasheet anymore!)

The NJLs that I bought recently from MOUSER (160 pcs. of each) have been produced:

- NJL0281DG with imprint: CQ1213 resp.CQ1203
- NJL0302DG with imprint: CQ1042

The lowest / highest Hfe that I have measured with my test-rig for the NJL0281DG have been: 94.52 resp. 105.29
The lowest / highest Hfe that I have measured with my test-rig for the NJL0302DG have been: 126.06 resp. 136.79

The deviance is in both cases <= 5% from the mean.

Since I have 2 test-rigs (one for NPN and another for PNP), I cannot do a cross-match.
I selected the NNN/PPP triples by chosing adjacent (in the NPN column resp. PNP-column) triples from the sorted EXCEL sheet.
For example: the NPN triple with the lowest Hfe goes together with the PNP triple with the lowest Hfe.

Best regards - Rudi

Last edited by Rudi_Ratlos; 5th October 2012 at 07:29 AM.
  Reply With Quote
Old 5th October 2012, 08:33 AM   #355
roender is offline roender  Romania
diyAudio Member
 
roender's Avatar
 
Join Date: Sep 2006
Thank you Rudi.
I was able to cross match my devices in less than 5% but they are all samples from ONsemi produced around 2006 - 2007
Sadly, they do not cross matched the fab process for hfe ... not anymore.
  Reply With Quote
Old 8th October 2012, 11:15 AM   #356
diyAudio Member
 
Rudi_Ratlos's Avatar
 
Join Date: Jun 2009
Location: Hamburg / Germany
I am quite surprised: the PCBs have been etched today (!) and are already on their way to me!

So I will have them on Thursday!
I have already informed the main customs office in Leipzig, Germany, about the delivery of the PCBs.
In the past I had to answer their questions: "Rudi: why do you need so many PCBs? Do you own an "Audio - company"?
How big will your profit be selling the PCBs? ...", and this caused some delay several times.
I hope that the delivery of the PCBs will not be delayed this time.

Since I do not know exactly, when the BADEL 4x34VAC transformers will be delivered (I was told: lead-time is about 3 weeks),
I will split the delivery and send you the transformers in a separate letter.

Gentlemen: you can warm-up your soldering-iron for the build of the beautiful FC-100!

Best regards - Rudi_Ratlos

P.S. If somebody does not want me to split the delivery of his order: please tell me.
Attached Images
File Type: png Image2.png (19.2 KB, 242 views)

Last edited by Rudi_Ratlos; 8th October 2012 at 11:41 AM.
  Reply With Quote
Old 8th October 2012, 01:16 PM   #357
jprco is offline jprco  Canada
diyAudio Member
 
Join Date: Jan 2009
Looking forward to these boards, Rudi. If it is going to cost you more to ship the boards and transformer separately then I don't mind wanting another few weeks. Whatever is easier for you. Thanks. Jean
  Reply With Quote
Old 8th October 2012, 01:37 PM   #358
evette is offline evette  Canada
diyAudio Member
 
Join Date: Jun 2006
Send a message via Yahoo to evette
Mr.Rudi Sir,,SAVE THE MONEY ship mine whenever you remember lol Evette
  Reply With Quote
Old 8th October 2012, 01:42 PM   #359
diyAudio Member
 
Rudi_Ratlos's Avatar
 
Join Date: Jun 2009
Location: Hamburg / Germany
Joseph, Jean: the 2 options cost the same.
The only difference is "registration":

Option 1: registered FC-100 letter and separate, non-registered transformer parcel
Option 2: registered "all-in" parcel

Best regards - Rudi

Last edited by Rudi_Ratlos; 8th October 2012 at 01:46 PM.
  Reply With Quote
Old 8th October 2012, 02:04 PM   #360
evette is offline evette  Canada
diyAudio Member
 
Join Date: Jun 2006
Send a message via Yahoo to evette
Rudi, Whatever is easier for you. Evette
  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
Roender's FC-100 prototype and builder's thread Rudi_Ratlos Solid State 914 7th August 2014 07:12 AM
Sanyo/B&O Icepower 200AC Rev.D, schematic about rev. engin., not complete finished tiefbassuebertr Class D 35 28th November 2013 03:15 PM
Tea-Bag's IXYS Depletion Mosfet Group and SemiSouth R100 JFET group buy. Tea-Bag Group Buys 330 20th May 2013 01:03 PM
Online vendors for Panasonic FC 1000/100 caps? analog_sa Parts 2 14th February 2007 02:19 AM


New To Site? Need Help?

All times are GMT. The time now is 05:53 PM.


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