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

twin triode question
twin triode question
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 12th May 2010, 04:10 AM   #1
chopchip is offline chopchip  Canada
diyAudio Member
Join Date: Feb 2010
Location: calgary alberta tundra canada
Default twin triode question

i pulled a pcb that has two 6cg7s on it and the grids on sections 2 are connected to the plates on sections 1 with 100 ohm resistors on both tubes. what is the purpose of this?

  Reply With Quote
Old 12th May 2010, 04:40 AM   #2
JohnAtwood is offline JohnAtwood  United States
diyAudio Member
JohnAtwood's Avatar
Join Date: May 2006
Location: Rural Nevada
It looks like the output of section 1 is direct-coupled to the input of section 2, with the 100 ohm resistor acting as a "grid stopper" to prevent possible oscillations. This may very well be a gain stage direct-coupled to a cathode-follower. You would have to trace out the rest of the circuit to see what is going on. This is not an unusual configuration.

- John Atwood
  Reply With Quote


twin triode questionHide 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
physically small twin triode tube sphinx Tubes / Valves 18 21st November 2009 05:43 PM
Stereo Buffer with a single twin triode Brit01 Tubes / Valves 43 29th July 2009 02:32 PM
question about twin triode tubes Nihilist Tubes / Valves 2 19th February 2009 04:39 AM
Any Twin Power triode Noval type? john Tubes / Valves 8 6th April 2005 02:09 PM

New To Site? Need Help?

All times are GMT. The time now is 06:36 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