High Voltage Heater info - 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 20th June 2007, 02:01 AM   #1
diyAudio Member
 
Join Date: Jun 2004
Location: Indiana
Default High Voltage Heater info

I am intriqued by high voltage heaters. Does anyone know of some good sites for information on different tubes with heaters running on a couple dozen volts or more? Would be interesting to see how various tubes compare to the more common low voltage heated types.

mike
  Reply With Quote
Old 20th June 2007, 02:39 AM   #2
jnb is offline jnb  Australia
diyAudio Member
 
Join Date: Dec 2006
As far as I know they are otherwise the same and were made that way for specific matters of convenience.

One benefit I could see is that a larger portion of the heater would be more positive than the cathode in grounded heater applications thereby improving heater supply rejection.

For those of us that float our heaters for this reason, it may actually make it slightly more critical when keeping within Vh-k limits.
  Reply With Quote
Old 20th June 2007, 03:47 AM   #3
diyAudio Member
 
Join Date: Jun 2004
Location: Indiana
I would think that the lower heater currents would also make induced hum easier to avoid. My thought is for AC heater drive from seperate transformer.

There is probably a lot of NOS for many of these tubes available but I doubt that there is any current production which could be a problem in the future.

mike
  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
DC Heater Voltage Bengali Tubes / Valves 9 2nd February 2009 04:19 AM
heater voltage Jaap Tubes / Valves 3 18th November 2008 11:39 PM
Too low heater voltage? jkeny Tubes / Valves 6 26th August 2008 12:08 AM
High-Voltage 350-400V Complementary Transistors for VAS :needs info ? Workhorse Solid State 9 30th August 2006 01:37 AM
Effects of high heater voltage? JoeBob Tubes / Valves 34 18th April 2003 03:21 PM


New To Site? Need Help?

All times are GMT. The time now is 09:32 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