b2
Well-known member
Hi All 
,
For some days,I walk in the "garden of electron tube" :...I've explored ;D ;D and found some references which were designed for computer system .
Thoses are very nice 7pin and SQ tube design,long life,low microphonics as E90cc and E92cc,AND CHEAP
E92cc and E90cc are both Triode BUT with a Common Cathode ;D ;D.
For E90cc/
Heaters run on 6.3V/0.4A.
Va=100V
Ia around 6mA.
S=6
µ=27
With Ra=20K ,Rk=250R and Rg might be around 50K.
I was wondering to used this tube in LineAmp, ;D ;D running the 2 triode sections in an output transformer which can passed Ia and the HT
OR
In the 2 section, the grid connected together + the anode connected together + nice output caps and a transformers .
The E90cc as a µ=27 and the E92cc as a µ of 45,so I was wondering if we can do a Gain stage with E92cc.............................Yes I think if we used it in Symetrical just after the input transformer...one section for one side of transformer and the 2 section for the other side ;D
With a 1:10 input transformer + E92cc Gain stage+pot Level+E90cc LineOutput+Output tranformer... :
This might work as a mic preamp????
Didn't have a tube simulator..... BUT I think it's would be interesting to simulate it ...just to see what thoses computer tubes will do ;D
E92cc and E90cc are cheap tube
Best regards,Bruno.
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,For some days,I walk in the "garden of electron tube" :
...I've explored ;D ;D and found some references which were designed for computer system .Thoses are very nice 7pin and SQ tube design,long life,low microphonics as E90cc and E92cc,AND CHEAP
E92cc and E90cc are both Triode BUT with a Common Cathode ;D ;D.
For E90cc/
Heaters run on 6.3V/0.4A.
Va=100V
Ia around 6mA.
S=6
µ=27
With Ra=20K ,Rk=250R and Rg might be around 50K.
I was wondering to used this tube in LineAmp, ;D ;D running the 2 triode sections in an output transformer which can passed Ia and the HT
OR
In the 2 section, the grid connected together + the anode connected together + nice output caps and a transformers .
The E90cc as a µ=27 and the E92cc as a µ of 45,so I was wondering if we can do a Gain stage with E92cc....................
.........Yes I think if we used it in Symetrical just after the input transformer...one section for one side of transformer and the 2 section for the other side ;DWith a 1:10 input transformer + E92cc Gain stage+pot Level+E90cc LineOutput+Output tranformer... :
This might work as a mic preamp????
Didn't have a tube simulator..... BUT I think it's would be interesting to simulate it ...just to see what thoses computer tubes will do ;D
E92cc and E90cc are cheap tube
Best regards,Bruno.
-
