[Amps] 4 x GU-81 Grounded Grid Penthodes
Máximo EA1DDO_HK1H
ea1ddo at hotmail.com
Fri Mar 2 14:30:35 PST 2012
Hi all,
I´ve been told that I can use DC for filaments (instead of AC), Is that true?
If it is true, Can I use switching power supply for filaments?
Tubes GU81 needs 12.6 v and around 10A, I could use 2 x 12.6 25A switching power supply in parallel with two chokes.
Is that correct?
Is there any difference to use AC or DC for filaments? (in grounded grid )
Thank you
73, Maximo - EA1DDO
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