SET Asylum: Re: Quest, Are you really getting 6 watts from EL34 in triode? by mb-de

Single Ended Triodes (SETs), the ultimate tube lovers dream.

Re: Quest, Are you really getting 6 watts from EL34 in triode?

131.176.183.182

In Reply to: Quest, Are you really getting 6 watts from EL34 in triode? posted by Scholl on January 12, 2001 at 04:51:25:

Dear Scott,
from a Telefunken application note (late 1950ies):
EL34 SE-Pentode:
B+ = 265V
Ua = 250V
Ug2 = 265V
Ia0 = 100mA
Ia = 105mA
Ig2 = 29mA
Ug1 = -14.5V
Ug1~= 8.7Veff
Rg2 = 0 Ohms
Ratr= 2000 Ohms
N~ = 11W
dist= 10%
EL34 SE-Triode:
B+ = 375V
Uag2= 350V
Ia0 = 70 mA
Ia = 74 mA
Ug1 = -26V
Ug1~= 18.9Veff
Rag2= 150 Ohms
Rk = 370 Ohms
Ratr= 3000 Ohms
N~ = 6W
dist= 8%
Take your pick - the triode distorst a bit less, the pentode delivers more power, and both run _very_ hot. Do not use Chinese or EI EL34...
Best regards,
---mb---
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Topic - Quest, Are you really getting 6 watts from EL34 in triode? - Scholl 04:51:25 01/12/01 ( 9)

Re: Quest, Are you really getting 6 watts from EL34 in triode? - mb-de 01/12/01 05:33:42 01/12/01 ( 8)
- higher Z output tranny - Steve 07:09:42 01/13/01 ( 3)
  - Re: Only partially true for triodes, not at all for pentodes... - mb-de 02:50:21 01/15/01 ( 0)
  - Re: higher Z output tranny - MQracing 07:46:10 01/13/01 ( 1)
    - Re: higher Z output tranny - Steve 13:29:03 01/15/01 ( 0)
- Thanks, I'll give it a try. NT - Scholl 06:29:10 01/12/01 ( 2)
  - In addition to mb-de's advice, - Quest 06:42:22 01/12/01 ( 1)
    - *PING* for quest - MQracing 08:25:11 01/14/01 ( 0)
- thank you mb-de! you spoke my mind (nt) - Quest 06:16:56 01/12/01 ( 0)