GU50 plate curves - diyAudio
Go Back   Home > Forums > Amplifiers > Tubes / Valves

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
Reply
 
Thread Tools Search this Thread
Old 4th June 2012, 05:36 PM   #1
diyAudio Member
 
Join Date: Oct 2011
Location: Tauberbischofsheim, Germany
Default GU50 plate curves

Hi,

does anyone of you know a source of GU50 plate curves at a screen voltage of 300 volts? Any sheet of LS50, EL152 and GU50 itselves that I know only shows curves for 250 v screen voltage.

Thanks in advance!
  Reply With Quote
Old 4th June 2012, 08:14 PM   #2
diyAudio Member
 
Wavebourn's Avatar
 
Join Date: Sep 2006
Location: Pleasant Hill, CA
Send a message via Skype™ to Wavebourn
If I remember right LS-50 datasheet contains curves with different G2 voltages, so it can be extrapolated approximately.

It has G3 as well. Adding +10-30V on it works similarly, without fear of frying G2.
__________________
The Devil is not so terrible as his math model is!
  Reply With Quote
Old 5th June 2012, 04:21 PM   #3
diyAudio Member
 
Join Date: Oct 2011
Location: Tauberbischofsheim, Germany
Hi Wavebourn,

the one that I know sadly doesn't feature plate curves referencing to 300 v screen. But the plate curves herein at pages 2 (top) and p3 (bottom) respectively, surprisingly differ much!

I've also had a look at the EL153 curves, mainly the same tube, but lacking the supressor grid, but also there's none for 300 v screen.

Best regards!
  Reply With Quote
Old 5th June 2012, 07:03 PM   #4
diyAudio Member
 
Globulator's Avatar
 
Join Date: Aug 2004
Location: Cambridge, England.
The main problem I have with the GU50 datasheets is the Russian language. I guess Anodespannun is Max Anode voltage, but the rest is a bit of a mystery TBH - so I tend to build, measure, tweak - a bit like fumbling in the dark!

Compared to that the small signal stuff is easy
  Reply With Quote
Old 5th June 2012, 07:49 PM   #5
diyAudio Member
 
Join Date: Oct 2011
Location: Tauberbischofsheim, Germany
I guess Anodenspannung is German and means anode/plate voltage !

Best regards!
  Reply With Quote
Old 6th June 2012, 02:06 AM   #6
diyAudio Member
 
jazbo8's Avatar
 
Join Date: Jan 2011
Location: In Transient
Quote:
Originally Posted by Kay Pirinha View Post
Hi Wavebourn,

the one that I know sadly doesn't feature plate curves referencing to 300 v screen. But the plate curves herein at pages 2 (top) and p3 (bottom) respectively, surprisingly differ much!

I've also had a look at the EL153 curves, mainly the same tube, but lacking the supressor grid, but also there's none for 300 v screen.

Best regards!
I thought EL152 is the civilian version? See if this one make sense.

Click the image to open in full size.

Jaz
  Reply With Quote
Old 7th June 2012, 11:42 AM   #7
diyAudio Member
 
Join Date: Oct 2011
Location: Tauberbischofsheim, Germany
Thanks. I know this sheet. At page 9 we find suitable data for audio frequency amplification, but it doesn't show the requested plate curves @300v screen. Those at p.3 relate to 250 v screen.

Best regards!
  Reply With Quote
Old 9th June 2012, 09:39 AM   #8
diyAudio Member
 
Join Date: Mar 2012
Check this thread:
Trying to make sense of the Sweet Peach

There's also some other threads on the GU50 with data, mostly supplied by Wavebourn, who's an expert.
  Reply With Quote
Old 9th June 2012, 06:59 PM   #9
diyAudio Member
 
Join Date: Aug 2008
Quote:
Originally Posted by Kay Pirinha View Post
Thanks. I know this sheet. At page 9 we find suitable data for audio frequency amplification, but it doesn't show the requested plate curves @300v screen. Those at p.3 relate to 250 v screen.

Best regards!
In all GU50 datasheets only 250V G2 operation is mentioned. So this means you have to extrapolate them (make them up )

Bilingual datasheet here. Seems like they wanted to make monies off potential enemy, too

http://tubedata.milbert.com/sheets/018/g/GU50.pdf
  Reply With Quote
Old 9th June 2012, 07:17 PM   #10
diyAudio Member
 
Wavebourn's Avatar
 
Join Date: Sep 2006
Location: Pleasant Hill, CA
Send a message via Skype™ to Wavebourn
Quote:
Originally Posted by costis_n View Post
Bilingual datasheet here. Seems like they wanted to make monies off potential enemy, too

http://tubedata.milbert.com/sheets/018/g/GU50.pdf
PDF format did not exist during Cold War.
__________________
The Devil is not so terrible as his math model is!
  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
Home-Made Plate Curves Ardee Tubes / Valves 2 22nd March 2011 07:32 PM
15E and plate curves lochness Tubes / Valves 5 4th November 2007 03:41 AM
basic question on plate curves Craig405 Tubes / Valves 14 27th October 2006 08:56 PM
please explain plate curves frank2395 Tubes / Valves 4 19th May 2005 12:03 AM
plate characteristic curves help jlsem Tubes / Valves 1 15th July 2003 07:50 AM


New To Site? Need Help?

All times are GMT. The time now is 02:28 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