WE old tube question - 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 25th December 2003, 05:57 PM   #1
diyAudio Member
 
Join Date: Jul 2001
Location: Italy
Default WE old tube question

Hi guys
a friend have a little trouble with a WE tube mounted on an old radio.
The tube is marked WE13 but I never found data on the web. Another friend have a similar tube named WE23 but seems different. Can anyone help us to find information about this old vacuum lamp?

thanx a lot
ciao
Filippo
www.audiofanatic.it
  Reply With Quote
Old 25th December 2003, 09:05 PM   #2
diyAudio Member
 
Join Date: Feb 2003
Location: Birmingham, UK
That's a rare one - a side contact tube!

It's a combined triode-pentode, indirectly heated with a 6.3v heater at 1A. I assume it was designed to be a frequency changer for AM bands. Pin connections are:

1 = grid 1
2 = grid triode
3 = cathode (both triode + pentode) and grid 3
4 = heater
5 = heater
6 = no connection
7 = anode triode
8 = grid 2
Top cap (or side cap) = anode pentode

I don't know the situation in Italy but in the UK such a tube is virtually unobtainable, so if your friend needs to replace it in his old radio he might have to drill the base out and adapt a 6K8 in its place. I don't have any info for a WE23 though...
  Reply With Quote
Old 25th December 2003, 10:27 PM   #3
diyAudio Member
 
Join Date: Feb 2003
Location: Birmingham, UK
On further investigation the WE13 was not designed to be used as a frequency changer, but as as an audio driver and output tube - the anode current of the pentode is 36ma at 250v. Very unusual for a side contact tube to have this configuration - you learn something new every day!

Seasonal Greetings!
  Reply With Quote
Old 25th December 2003, 10:55 PM   #4
diyAudio Member
 
Join Date: Jul 2001
Location: Italy
Thanks 10000
we try with a 6K8, but it's an hexode-triode, maybe also a simple 6AN8 will be good....

thanx again
Filippo
www.audiofanatic.it
  Reply With Quote
Old 25th December 2003, 11:04 PM   #5
diyAudio Member
 
Join Date: Jul 2001
Location: Italy
mmmmm.... 36mA @ 250V? the 6AN8 isn't good... maybe an ECL82-85-86...

ciao
Filippo
www.audiofanatic.it
  Reply With Quote
Old 26th December 2003, 10:18 AM   #6
diyAudio Member
 
Join Date: Feb 2003
Location: Birmingham, UK
Information about the WE13 is sparse (I'm checking in Babani's Radio Tube Encyclopedia of 1949!) but the characteristics of the pentode section are:

Va = 250v
Ia = 36ma
Vg2 = 250v
Ig2 = 4ma
Rk = 150 ohms
Anode imp = 7000 ohms
Power out = 4.5w

Hopefully this will help you get a good match.
  Reply With Quote
Old 26th December 2003, 07:26 PM   #7
diyAudio Member
 
Join Date: Jul 2001
Location: Italy
ok, dissipation and load are close to the ECL86

thanks, have a good 2004!
Filippo
www.audiofanatic.it
  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
Tube PSU question Greyskale Power Supplies 8 27th February 2008 09:06 AM
Tube PSU Question philipbarrett Tubes / Valves 18 18th October 2005 11:03 PM
What can I do with these? (tube and OPT question) needtubes Tubes / Valves 7 8th March 2005 01:01 PM
Tube Question, what the....? Rino odorico Tubes / Valves 15 11th November 2002 09:14 PM
Tube CAD Question Aud_Mot Tubes / Valves 0 6th October 2002 03:53 AM


New To Site? Need Help?

All times are GMT. The time now is 10:21 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