Take a look and let me know what you think

[nhuwar]

Hi All,

This is a schematic for you to critique it. As you can see I don't have a b+ or bias point for the output tube yet nor do I have the plate load set yet as this info will be found by experimentation do to the none audio use of this tube.

http://images35.fotki.com/v1132/fileQcc8/a51b0/1/1298405/5925102/rev2.jpg

Thanks,
Nick

 

[Miles Prower]

^^^^

404 File not found error. 😡

 

[nhuwar]

http://public.fotki.com/nhuwar/6c21-se-amp/

 

[SY]

As you can see I don't have a b+ or bias point for the output tube yet

Then why design a driver for it? First things first, you have to know what the drive requirements are, then you can rationally work backward to the input.

edit: If this is an Eimac 6C21, you'll need a PILE of power and swing to drive it. A 6SN7 won't even tickle that puppy.

http://frank.pocnet.net/sheets/088/4/450TL.pdf

 

[nhuwar]

Hi SY,

The eimac 450tl and a 6c21 are diffrent as opposed to normal though a 6c21 has a mu of 30 rather then 18.

Nick

 

[SY]

You've seen this?

http://www.lakeerieba.com/6C21/6C21.htm

 

[nhuwar]

Yes I have. The only diffrence is I'm using machelett tubes not Eimac. Also I'm going to be running it in class a1 and the reason I haven't done the work yet is it's too dam cold in my garage here LOL. But thats what I get for living in New England.

So excatly what suggesions do you have SY do you think I'm going about this all wrong?

Nick

 

[SY]

Just backward. I'd start by putting the output tube on the bench and getting some of the basic parameters for the A1 service you're contemplating.

 

[nhuwar]

Ya I know what you mean and I will be doing it justwanting for a warm day to do it. Also I'm wanting on the plate and grid heat sink caps.

nick

 

[SY]

There's a reason they call that glowy thing in the middle a "heater."😀

 

[nhuwar]

Ya I just need more then LOL😀