How to model psud2 using tube regulator?
 User Name Stay logged in? Password
 Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read Search

 Tubes / Valves All about our sweet vacuum tubes :) Threads about Musical Instrument Amps of all kinds should be in the Instruments & Amps forum

 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
 14th June 2007, 07:02 PM #1 pchw   diyAudio Member   Join Date: Apr 2006 Location: Fremont, California How to model psud2 using tube regulator? Hi all, I want to build a preamp that uses 150V B+ and draws 20ma. Since I have some 0D3's around, that seems to fit the bill nicely. The 0D3 needs about 160V to start and needs to maintain a minimum of 5ma to avoid dropping out of regulation. So a couple questins: 1. when I model the PS using psud2, what kind of current load should I be using? 40ma? 2. To calculate the series resistor for the final voltage drop to 150V, what current should I be using? 40ma again?? Thanks!!! __________________ - Fred -
 14th June 2007, 08:51 PM #2 Tweeker   diyAudio Member   Join Date: Dec 2004 Location: Cincinnati, Ohio You need to figure out how much current the 0D3 is shunting and model it as current tap, and use 20ma the load. Id give the 0D3 more like ~180V at start up to be sure it ignites. __________________ Be sure your foil hat has a good low impedance ground.
 14th June 2007, 09:09 PM #3 pchw   diyAudio Member   Join Date: Apr 2006 Location: Fremont, California Since this is a preamp, the current draw should be relative constant. Does 20ma sound right for the OD3 to shunt? Let say the OD3 shunts 20ma, can you show me how to calculate the resistor before the 0D3? Thanks!! __________________ - Fred -
Zen Mod
Official Court Jester
diyAudio Member

Join Date: Jan 2003
Location: ancient Batsch , behind Iron Curtain
Quote:
 Originally posted by pchw Since this is a preamp, the current draw should be relative constant. Does 20ma sound right for the OD3 to shunt? Let say the OD3 shunts 20ma, can you show me how to calculate the resistor before the 0D3? Thanks!!
Attached Images
 vr-toobz1.jpg (95.2 KB, 375 views)
__________________
my Papa is smarter than your Nelson !
clean thread; Cook Book;PSM LS Cook Book;Baby DiyA ;Mighty ZM's Bloggg;Papatreasure;Papa...© by Mighty ZM

Zen Mod
Official Court Jester
diyAudio Member

Join Date: Jan 2003
Location: ancient Batsch , behind Iron Curtain
one more;
can't shrink it better
Attached Images
 vr-toobz2.jpg (96.5 KB, 353 views)
__________________
my Papa is smarter than your Nelson !
clean thread; Cook Book;PSM LS Cook Book;Baby DiyA ;Mighty ZM's Bloggg;Papatreasure;Papa...© by Mighty ZM

 14th June 2007, 10:01 PM #6 pchw   diyAudio Member   Join Date: Apr 2006 Location: Fremont, California Thanks a lot!!! __________________ - Fred -
Zen Mod
Official Court Jester
diyAudio Member

Join Date: Jan 2003
Location: ancient Batsch , behind Iron Curtain
Quote:
 Originally posted by pchw Thanks a lot!!!
from some reason I can't upload second (last ) page ;

I'll try later.........seems momentary glitch on forum........

edit:

WTF!!!
I see it now........?!

anyway.........

__________________
my Papa is smarter than your Nelson !
clean thread; Cook Book;PSM LS Cook Book;Baby DiyA ;Mighty ZM's Bloggg;Papatreasure;Papa...© by Mighty ZM

Zen Mod
Official Court Jester
diyAudio Member

Join Date: Jan 2003
Location: ancient Batsch , behind Iron Curtain
Re: How to model psud2 using tube regulator?

Quote:
 Originally posted by pchw Hi all, I want to build a preamp that uses 150V B+ and draws 20ma. Since I have some 0D3's around, that seems to fit the bill nicely. The 0D3 needs about 160V to start and needs to maintain a minimum of 5ma to avoid dropping out of regulation. So a couple questins: 1. when I model the PS using psud2, what kind of current load should I be using? 40ma? 2. To calculate the series resistor for the final voltage drop to 150V, what current should I be using? 40ma again?? Thanks!!!

btw- as load use Constant Current Sink..........choose stepped one ;

for first (starting current) use just current through load (preamp) and as second step use summ of load and shunt current
__________________
my Papa is smarter than your Nelson !
clean thread; Cook Book;PSM LS Cook Book;Baby DiyA ;Mighty ZM's Bloggg;Papatreasure;Papa...© by Mighty ZM

 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 Rules
 Forum Jump User Control Panel Private Messages Subscriptions Who's Online Search Forums Forums Home Site     Site Announcements     Forum Problems Amplifiers     Solid State     Pass Labs     Tubes / Valves     Chip Amps     Class D     Power Supplies     Headphone Systems Source & Line     Analogue Source     Analog Line Level     Digital Source     Digital Line Level     PC Based Loudspeakers     Multi-Way     Full Range     Subwoofers     Planars & Exotics Live Sound     PA Systems     Instruments and Amps Design & Build     Parts     Equipment & Tools     Construction Tips     Software Tools General Interest     Car Audio     diyAudio.com Articles     Music     Everything Else Member Areas     Introductions     The Lounge     Clubs & Events     In Memoriam The Moving Image Commercial Sector     Swap Meet     Group Buys     The diyAudio Store     Vendor Forums         Vendor's Bazaar         Sonic Craft         Apex Jr         Audio Sector         Acoustic Fun         Chipamp         DIY HiFi Supply         Elekit         Elektor         Mains Cables R Us         Parts Connexion         Planet 10 hifi         Quanghao Audio Design         Siliconray Online Electronics Store         Tubelab     Manufacturers         AKSA         Audio Poutine         Musicaltech         Holton Precision Audio         CSS         Dx Classic Amplifiers         exaDevices         Feastrex         GedLee         Head 'n' HiFi - Walter         Heatsink USA         miniDSP         SITO Audio         Twin Audio         Twisted Pear         Wild Burro Audio

 Similar Threads Thread Thread Starter Forum Replies Last Post Dr ZEE Equipment & Tools 25 22nd August 2012 07:41 PM JoshK Tubes / Valves 20 31st August 2007 09:27 PM Steen Bentzen Tubes / Valves 20 11th October 2005 04:13 AM valveitude Tubes / Valves 5 5th July 2005 01:56 AM SGregory Tubes / Valves 1 20th October 2004 01:51 PM

 New To Site? Need Help?

All times are GMT. The time now is 10:02 PM.