PP GU50 triode strapped project

[jazbo8]

Hello!
I do not know which is your location, but for me it was easier to find cores C-core Russian TV, very good cores, TC-40 TC-90, or TC-180...... So I recommend C-section core with at least 8 cm * 2.
But doing well and E + I with a minimum core section of 16cm * 2.

I am in China, should be no problem finding the core.

Thanks,
Jaz

 

[fabioab]

Hi,
I'm building a PP amplifier in AB1 class for guitar amplification. I calculated 12K_Ohms of plate-to-plate impedance for Vp=700V (based on 40W plate dissipation) What do you think about this value for the primary of OT?

Thanks all.
FAB

 

[fabioab]

With pleasure, have in the schematic drawing data for OT GU50 PP (triode mode), Raa = 3700ohmi (4000ohmi)
There are two variants: with core E + I-section of 18 cm * 2 and another on the core C-core section of 8-10cm * 2.
The coil design is the location but also their connection phase.
For a PP pentode will be recalculated for Raa = 5000ohmi.
I hope the drawing is understood.
If there are questions, answer with pleasure.
The transformer is made ​​practical and works in multiple copies, project schematics and the OT is personal.
Excuse my English!

This information is excatly I'm looking for. In my case The Vp=700V (40W_max plate dissipation). Is 5k_ohms Ok for this voltage? I calcuated 12_kOhms, but I'm not shure. What do you think?

Thanks
FAB

 

[fabioab]

This information is excatly I'm looking for. In my case The Vp=700V (40W_max plate dissipation). Is 5k_ohms Ok for this voltage? I calcuated 12_kOhms, but I'm not shure. What do you think?

Thanks
FAB

In my case the tubes will work as pentode.
Thanks
FAB