Oct 11 2014
2014-10-11,
These are some preliminary shots of a GU 81 tube, after it is heated up – just a tiny little bit.
Actually, the heater requires 12,6V with a current of 11 A.
I used a 12,5 V AC toroid, rated at 150 W, but unfortunately, the toroid that I used, under the load, … sort of … started sagging, so it gave no more than 11,7 V …
Therefore, it would be fair to say … that the tube is grossly underheated …
Permanent link to this article: http://hiend-audio.com/2014/10/11/gu-81-by-night/
All materials, text, personal data, photographs, videos etc. as published, placed, located on the hiend-audio.com domain are subject to copyright (under the Berne Convention), either my personal creations, or belonging to third parties that have expressed their consent to place them on this domain. Any commercial use of any and all of the above-mentioned copyrighted material is subject, in each and every case, requires and is subject to written consent.
Wszystkie materiały, teksty, dane perrsonalne i fotografie, opublikowane przeze mnie filmy itd. znajdujące się na domenie hiend-audio.com są obiektami moich praw autorskich (zgodnie z Konwencją Berneńską) lub stron trzecich, które wyraziły na ich umieszczenie na tej domenie. W celu komercyjnego wykorzystania wszystkich, wyżej wymienionych obiektów praw autorskich, w każdym konkretnym przypadku, wymagana jest pisemna zgoda.
