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

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

GM70 and Other LTSpice Tube Models
GM70 and Other LTSpice Tube Models
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
Thread Tools Search this Thread
Old 31st August 2012, 10:45 AM   #21
artosalo is offline artosalo  Finland
diyAudio Member
artosalo's Avatar
Join Date: Feb 2010
Thanks Lars

I run this model with my existing amplifying stage and it seems that the
model is quite different than the 6F12P pentode from 1990, the tube type where the heaters can not be seen.

This is my circuit:

Click the image to open in full size.

In real circuit the voltages and currents are as follows:

Ua = 92 V
Ia = 4,0 mA
Ug2 = 177 V
Ig2 = 0,47 mA

In actual circuit THD is 0,40 % when the output level is 20 Vrms.
In simulation the screen current is much smaller than in real case.
To get the simulation work as the actual circuit works the screen resistor should be some 750 k when in actual circuit it is 220 k.
  Reply With Quote


GM70 and Other LTSpice Tube ModelsHide 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

Similar Threads
Thread Thread Starter Forum Replies Last Post
6C33C tube socket for GM70 tube?? gaborbela Tubes / Valves 9 17th June 2011 05:23 AM
New GM70 tube with problem FullRangeMan Tubes / Valves 9 17th June 2010 12:10 PM
LtSpice - Russian tube models Svein_B Tubes / Valves 11 5th May 2010 02:55 AM
Ltspice and Valve models Melon Head Software Tools 3 18th October 2009 08:35 AM
Need help with tube models in LTSpice Bitrex Tubes / Valves 5 6th August 2009 07:28 PM

New To Site? Need Help?

All times are GMT. The time now is 02:13 AM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.00%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright ©1999-2017 diyAudio