SE 100TH clasa A2 proiect comun

[adrian_pic]

I think the last schematic is this one:

I don't know if you saw that project it's about Single End class A2 (Class A2 amplifiers can overcome a high Rp by driving the grid positive with respect to the cathode. Because this makes the grid a secondary anode, it too will draw current from the cathode while accelerating the remaining electrons towards the plate). For this reason the driver schematic it's not so simple and furthermore popa marius try to obtain a very low THD. 

[Vizitator]

 

I think the last schematic is this one:

 

 

 

 

You think....but u are not sure...

[Vizitator Martin de Heer]

A parafeed ouput transformer with a anode choke is a good idee ! Lundhal has one .The anode choke would be a big lump of iron .First i will build a mosfet follower driven by a 6c8g cascade tube stage , then further inprovements will be made !

[Vizitator]

A parafeed ouput transformer with a anode choke is a good idee ! Lundhal has one .

The anode choke would be a big lump of iron .

First i will build a mosfet follower driven by a 6c8g cascade tube stage , then further inprovements

will be made !

....und dann brauchst du nicht mehr die Oris.

Viel spass mit den mosfet treiberstufe, wir haben es schon probiert, macht kein sinn. Die Übertrager sind natürlich die bessere Lösung.

Gruß.

[Vizitator Martin de Heer]

What is the "oris " thing ? So....a mosfet follower is not the way to go as I understand , surgestions ?Thanks .

[Vizitator]

Oris 150 von BD.

http://www.bd-design.nl/contents/en-us/d195.html

 

 

So....a mosfet follower is not the way to go as I understand , surgestions ? 

 

 

Trafo übertrager (deutsch), interstage transformer (english)...usw (etc).

[adrian_pic]

If 30W it's enough for you I suggest you to try this (from far it is much easier to make this amplifier) :

 

here you have the link: http://www6.plala.or.jp/Michi/100TH%20SE%20amp.html

[Vizitator _251518]

Oris 150 von BD.http://www.bd-design.nl/contents/en-us/d195.html That is a pic of the old setup, the Oris hoorns will stay.... the 211 amp is replaced by a SE 45/10Y amp and the preamp for the 4P1L. For the bass units i use hypex 180ucd.Nice schematic , to bad the 5998A is hard to find and expensive !GRTZ..... Trafo übertrager (deutsch), interstage transformer (english)...usw (etc).

[Vizitator]

Extrem de greu de condus acest tub, sint aproape convins ca doar un FET va rezolva acest lucru, am incercat aproape toate tuburile capabile de a fi un driver insa fara sa depasesc bunul simt tehnic ce spune stiiti voi ce...

[Vizitator Martin de Heer]

Extrem de greu de condus acest tub, sint aproape convins ca doar un FET va rezolva acest lucru, am incercat aproape toate tuburile capabile de a fi un driver insa fara sa depasesc bunul simt tehnic ce spune stiiti voi ce...

Extremely difficult to manage this tube are almost convinced that only a FET will solve this, I tried almost all tubes capable of being a driver but without common sense to overcome technical cIs this the right translation ?Thanks ...

[Vizitator]

Asa este, sper sa rezolv aceasta problema si multumesc pentru interes

[adrian_pic]

It's correct, a little bit clear can be :

 

It's extremely difficult to drive this tube, I'm almost convinced that only a FET will solve this thing .....

Editat Ianuarie 10, 2016 de adrian_pic

[TON]

Deci in final ampul va fi un hibrid !?

[Vizitator Martin de Heer]

What about these one What about these one http://www.diyaudio.com/forums/attachments/tubes-valves/462462d1422641143-looking-circuit-se-amp-eimac-100th-6xx7-se-end-100th-2015-v1.0.pdf

[Vizitator]

Poate fi o solutie buna, probabil o sursa de curent constant in locul rezistorului R5=1K/3w ajuta la transferul semnalului pe grila lui 100TH