AC or DC Heater? - 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 26th October 2004, 09:08 PM   #1
diyAudio Member
 
Join Date: Jul 2003
Location: Indiana
Send a message via AIM to sauuuuuce
Default AC or DC Heater?

Any advantages to using DC or AC for a heater voltage? Tube spec's state that either AC or DC can be used. Just wondering what the more experienced have to say about the subject.
  Reply With Quote
Old 27th October 2004, 01:17 AM   #2
garbage is offline garbage  Singapore
diyAudio Member
 
garbage's Avatar
 
Join Date: Apr 2004
Location: Singapore
Default not experienced

but page 6 of rc10 manual states that "Filament-cathode types of tubes are particularly well suited for operation from a steady source of filament supply voltage such as a battery"

and The heater-cathode construction is well adapted for use in radio tubes intended for operation from a-c power lines.

so this might be a start for recommended usage.

rgds
garbage
  Reply With Quote
Old 27th October 2004, 12:57 PM   #3
mcs is offline mcs  Denmark
diyAudio Member
 
Join Date: Aug 2003
Location: Denmark
Unless you have problems with hum, just use AC. For a linestage or poweramp, I would probably use AC. For a phono preamp use DC.

If you use directly heated tubes with a heater voltage above 2.5V, using DC may be nescessary.

Best regards,

Mikkel C. Simonsen
__________________
My personal electronics website
Remote control kits website
  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
New DHT heater Guido Tent Tubes / Valves 680 31st March 2014 05:20 PM
how to wire 6.3VDC heater on a heater with center tap (12.6V series, 6.3V parallel)? jarthel Tubes / Valves 9 14th April 2012 05:36 PM


New To Site? Need Help?

All times are GMT. The time now is 11:53 AM.


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