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 11th March 2010, 10:38 PM   #3141
massimo is offline massimo  Italy
diyAudio Member
 
Join Date: Dec 2002
Location: Milan, Italy
Not that important, but...
Take a DVM, set for max VAC, probes (forget colour) on pin 2 and 3 of the Xfrm: you get something around 225-235 VAC. That is Vin
BE CAREFUL! High Voltage! Don't short anything!

Then set the DVM for 200 VAC, probes on pin 6 and 7 and you get the Vout

Assuming you've wired the Xfrm as per the drawing you attached.

P.S. the Preamp should be on

P.P.S. you have now two shunt regs connected to one Xfrm, right? Thus total I should be around 2 * 200 mA or so....

Last edited by massimo; 11th March 2010 at 10:41 PM.
  Reply With Quote
Old 12th March 2010, 10:39 AM   #3142
merlin el mago is offline merlin el mago
diyAudio Member
 
merlin el mago's Avatar
 
Join Date: Sep 2009
Location: Catalonia - Europe
If I understand well, you want to know the secondary voltage with the phono connected, ok?
  Reply With Quote
Old 12th March 2010, 10:41 AM   #3143
Salas is offline Salas  Greece
diyAudio Chief Moderator
 
Salas's Avatar
 
Join Date: Oct 2002
Location: Athens-Greece
Simplistic NJFET RIAA
He wants to see the regulation. How much it drops from nominal when well loaded. Now you must have one Tx giving about 300mA to a pair of regs, right? Thats a tell tale situation enough.
  Reply With Quote
Old 12th March 2010, 10:56 AM   #3144
merlin el mago is offline merlin el mago
diyAudio Member
 
merlin el mago's Avatar
 
Join Date: Sep 2009
Location: Catalonia - Europe
Why want to know how drops from nominal when loaded, possible to know the perfomance of the Tx, if its capable to follow giving the 40V when loaded?
  Reply With Quote
Old 12th March 2010, 10:59 AM   #3145
Salas is offline Salas  Greece
diyAudio Chief Moderator
 
Salas's Avatar
 
Join Date: Oct 2002
Location: Athens-Greece
Simplistic NJFET RIAA
Yes, and maybe he wants to know where it goes when the secondaries go series like its needed here. You know Italians, always never worried about top performance in gear and chicks. Ducati, Ferrari, Monica Bellucci etc. Always about compromising are those guys...
  Reply With Quote
Old 12th March 2010, 11:10 AM   #3146
nicoch58 is offline nicoch58  Europe
diyAudio Member
 
Join Date: Oct 2004
  Reply With Quote
Old 12th March 2010, 11:17 AM   #3147
Salas is offline Salas  Greece
diyAudio Chief Moderator
 
Salas's Avatar
 
Join Date: Oct 2002
Location: Athens-Greece
Simplistic NJFET RIAA
Don't grin up on me you sneaky you! Not to mention you know zero fashion or the cheap indifferent quality of food and wine, pasta and dairies you propose to the world...
  Reply With Quote
Old 12th March 2010, 11:31 AM   #3148
merlin el mago is offline merlin el mago
diyAudio Member
 
merlin el mago's Avatar
 
Join Date: Sep 2009
Location: Catalonia - Europe
Seems the only way to get the perfection nothing to do with compromising.

I love Ferrari+Alonso, any kind of pasta, pizza, italian coffe (please no other like the expresso), capuccino, Monica Belluci too. I visit Italy several times & I enjoyed other fine things like carpaccio, grana padano, funghi porcini & many other delicatessen, don't forget fashion are the best. The bad thing is traffic when goes more to the south more bad, Milan seems perfect when you drive in Rome, butwhen you drive in Napols or Reggio Calabria you live in other dimension.
  Reply With Quote
Old 12th March 2010, 11:34 AM   #3149
massimo is offline massimo  Italy
diyAudio Member
 
Join Date: Dec 2002
Location: Milan, Italy
Quote:
Originally Posted by Salas View Post
He wants to see the regulation.


The only data not specified by Hammond
  Reply With Quote
Old 12th March 2010, 11:37 AM   #3150
massimo is offline massimo  Italy
diyAudio Member
 
Join Date: Dec 2002
Location: Milan, Italy
Quote:
Originally Posted by Salas View Post
Yes, and maybe he wants to know where it goes when the secondaries go series like its needed here. You know Italians, always never worried about top performance in gear and chicks. Ducati, Ferrari, Monica Bellucci etc. Always about compromising are those guys...


I'm an open book for you! (as we say in Italy)

  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 05:45 PM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.79%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright ©1999-2017 diyAudio
Wiki