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

Instruments and Amps Everything that makes music, Especially including instrument amps.

AX84 - Cathode resistor replacment
AX84 - Cathode resistor replacment
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 25th April 2016, 06:17 PM   #1
Lukaamp is offline Lukaamp  Croatia
diyAudio Member
Join Date: Apr 2016
Location: SB
Default AX84 - Cathode resistor replacment

Hi, can I replace cathode resistor of 130 R 1W with some other value (100R, 150R, 180R ..etc )? And if I can what it heppens?


Schematic is in att.

  Reply With Quote
Old 25th April 2016, 07:01 PM   #2
payloadde is offline payloadde  Europe
diyAudio Member
payloadde's Avatar
Join Date: Mar 2008
100ohm --> more plate current, tube runs hotter, may be too hot
150ohm --> less current, tube runs cooler, less output
you can however connect two 270ohm resistors in parallel, that gives you 135ohms, close enough ...
Judge: This court appreciates that you invented physics, Mr.Newton, but unfortunately you can't have a patent on it.
  Reply With Quote


AX84 - Cathode resistor replacmentHide 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
CCS instead of a resistor in the cathode of a cathode follower? Nailbunny7 Tubes / Valves 38 19th April 2016 07:58 AM
Cathode resistor crazy bill Tubes / Valves 5 11th October 2014 01:17 PM
Has anyone tried tx2575 in cathode resistor? milen007 Tubes / Valves 2 29th January 2012 06:58 PM
Determining cathode resistor bereanbill Tubes / Valves 5 27th April 2009 11:33 PM
Wirewound cathode resistor Klimon Tubes / Valves 12 30th August 2006 10:19 PM

New To Site? Need Help?

All times are GMT. The time now is 04:13 AM.

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