View Single Post
Old 30th Nov 2022, 1:49 pm   #25
Robert Gribnau
Heptode
 
Robert Gribnau's Avatar
 
Join Date: May 2017
Location: Konongo, Ghana
Posts: 510
Default Re: Combined power-pentode and double-diodes?

Attached are two examples of Mullard datasheets in which 1.2 A for the EBL31 is specified.

Perhaps the 1.5 A was a mistake, but it could also be that soon after the release of this valve type the heater was changed/improved. There are more examples of such changes in heater consumption.
Attached Thumbnails
Click image for larger version

Name:	EBL31 Mullard Maintenance Manual.jpg
Views:	35
Size:	57.1 KB
ID:	269033   Click image for larger version

Name:	EBL31 Mullard Technical Handbook Volume 1 Receiving Valves Equipment Types - Cathode Ray Tubes -.jpg
Views:	24
Size:	22.6 KB
ID:	269034  
__________________
Robert
Robert Gribnau is offline