Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Analogue Source Turntables, Tonearms, Cartridges, Phono Stages, Tuners, Tape Recorders, etc.

Simplistic NJFET RIAA
Simplistic NJFET RIAA
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 26th January 2011, 02:46 PM   #5791
AndrewT is offline AndrewT  Scotland
R.I.P.
 
Join Date: Jul 2004
Location: Scottish Borders
Quote:
Originally Posted by mhouston View Post
I had used the equiv. of a 0.0034uf cap where a 0.034 cap should be.
had the BOM and schematic specified 34nF and the components marked as 33nF + 1nF, the mistake would probably never occur.
__________________
regards Andrew T.
  Reply With Quote
Old 26th January 2011, 07:18 PM   #5792
mhouston is offline mhouston  Australia
diyAudio Member
 
mhouston's Avatar
 
Join Date: Jan 2006
Location: Victoria, Australia
Quote:
Originally Posted by AndrewT View Post
had the BOM and schematic specified 34nF and the components marked as 33nF + 1nF, the mistake would probably never occur.
I really have to take the blame here for not being more carefull. I'm usually spot on with my values but on this build I buggered two.
  Reply With Quote
Old 12th February 2011, 04:38 PM   #5793
smpkje is offline smpkje  Greece
diyAudio Member
 
Join Date: Mar 2010
Location: Athens Greece
This is my Salas MC phono with 2x12R PS, under construction.
I hope to finish it soon.
Attached Images
File Type: jpg P1010041.JPG (650.4 KB, 336 views)
File Type: jpg P1010043.JPG (657.4 KB, 287 views)
File Type: jpg P1010046.JPG (676.4 KB, 279 views)
  Reply With Quote
Old 12th February 2011, 04:51 PM   #5794
Salas is offline Salas  Greece
diyAudio Chief Moderator
 
Salas's Avatar
 
Join Date: Oct 2002
Location: Athens-Greece
Simplistic NJFET RIAA
Looks like a very careful job. Keep us posted.
  Reply With Quote
Old 16th February 2011, 08:18 AM   #5795
kstlfido is offline kstlfido  United States
diyAudio Member
 
kstlfido's Avatar
 
Join Date: Mar 2006
Location: Berkeley, CA
Default Old resistors

It's been a while since I posted here, been lurking, though! I ran my Salas for a while, but ran out of time to play with it. Needs some serious updating; much has progressed here since 2008.

Just wondering if anyone has used old-school wire-wound precision resistors. Are they suitable for my Salas phono stage? Shallcross, IRC, etc. I've got a box full. Pic attached.

Fly not a resistive element!

-Kent
Attached Images
File Type: jpg old_ww_res.jpg (105.3 KB, 238 views)
  Reply With Quote
Old 16th February 2011, 08:33 AM   #5796
Salas is offline Salas  Greece
diyAudio Chief Moderator
 
Salas's Avatar
 
Join Date: Oct 2002
Location: Athens-Greece
Simplistic NJFET RIAA
I don't remember anyone reporting about having used such parts. If some are wound in a non inductive manner and you can tackle the layout nicely due to their bulk considerations, why not. The cart load resistor and the series in Riaa filter one are the most detectable, you may try on those even on your existing phono and decide if they are doing something positive.
  Reply With Quote
Old 16th February 2011, 08:47 AM   #5797
kstlfido is offline kstlfido  United States
diyAudio Member
 
kstlfido's Avatar
 
Join Date: Mar 2006
Location: Berkeley, CA
Ok. I might give them a spin.

In my 1960 parts catalog, only IRC is represented. Nowhere in their WW precision resistor data do they mention the word "inductive".

Any way to find out if they are non-inductive wound? Like giving them some DC and see if it moves a compass?
  Reply With Quote
Old 16th February 2011, 02:16 PM   #5798
Salas is offline Salas  Greece
diyAudio Chief Moderator
 
Salas's Avatar
 
Join Date: Oct 2002
Location: Athens-Greece
Simplistic NJFET RIAA
LCR bridge. Even if bifilar there can be some uH due to not perfect cancellation of the windings. Don't use them between the source pins and grounds for degeneration at least where is local feedback.
  Reply With Quote
Old 17th February 2011, 02:56 PM   #5799
schultzsch is offline schultzsch  Europe
diyAudio Member
 
Join Date: Mar 2009
hello


i`ve received 2sk170 are but they are GR.i`ve selected them in a few pairs with idss from 3.5ma to 6.2ma.on the schematic of Simplistic RIAA i saw i need BL`s with idss 8-8.5ma.what should i do so i can use three of the pairs of GR`s i have ?
  Reply With Quote
Old 17th February 2011, 07:53 PM   #5800
kstlfido is offline kstlfido  United States
diyAudio Member
 
kstlfido's Avatar
 
Join Date: Mar 2006
Location: Berkeley, CA
Quote:
Originally Posted by Salas View Post
LCR bridge.
Duh! I have an old Leeds & Northrup bridge. Will check.
  Reply With Quote

Reply


Simplistic NJFET RIAAHide 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

Forum Jump


New To Site? Need Help?

All times are GMT. The time now is 04:49 PM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.79%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio
Wiki