output transformer for push-pull ab1 formula

[SUPERMAGOO]

I need formula for calculate tube output transformer for 6l6gc please.
thanks.

 

[NewYorkDave]

http://members.aol.com/sbench102/composit.html

http://www.audioxpress.com/resource/audioclass/ga300ac.pdf

...or just use the "typical operating conditions" out of a tube manual. Or check the transformer used in an amplifier similar to what you want to build. There's such a long history of push-pull 6L6 designs that you shouldn't have to start from first principles unless you enjoy the mental exercise...

 

[PRR]

> formula for calculate tube output transformer for 6l6gc

Rl = 6.6K

http://www.groupdiy.com/index.php?topic=94038

 

[vibrolax]

Whether you calculate it yourself, use the tube chart, or copy what someone else did, the "optimal" primary OT impedance depends on the plate voltage.

My 1967 Fender Vibrolux reverb OT has a primary impedance of 4400 ohms (into 4 ohms). Plate voltage is ~440.

The 1959 Sylvania Technical Manual suggests primary impedance values for 6L6GC class AB1 with 400V on the plates: 6600 (34W output); with 450V 6000 ohms (50W output).

-Jon

 

[SUPERMAGOO]

wow veri fast respond!i need for 4 tubes 6l6gc at 460v 110w.
it´s 3056 ohm p to p recistance? prr i need good formula for calculate the correct core area in cm2. its correct ?core area=20*sqrt(power/cut frecuency) for ab1? :? :?

 

[SUPERMAGOO]

nydave,
It was difficult to understand because I don`t know English very well but they were really interesting articles.
Thanks.
pd. If you have more pages, articles or any programme that could be usefull, please tell me.