Zenductor

[tonyEE]

Will he bring his new Sourcepoint speaker? He might have to bring a van full.... the ultimate "white van speaker" IMHO.

 

[nicoch58]

have named it "Zenductor", single channel, single-stage, single transistor,
single-ended Class A that comes in at 5 watts. Closest analogy would be a
solid state version of the Zen Triode from DecWare.

"That transistor will be a New-Old-Stock IRFP048 Mosfet, and Build Campers will be building a pair of naked mono-blocks.
In other news it looks like we will be able to do a Zoom event on Sunday."
quote fromBAF23

 

[Nelson Pass]

So. By way of beating the drum, here's my Zenductor graphic.

 

[Zen Mod]

Very Bad Papa!

 

[Nelson Pass]

Here's a better one...

 

[Fuling]

Ah... I've used so called zero bias triodes, zero bias fets is new to me though. The heatsink requirements should be minimal...........

 

[tonyEE]

Raising his hand from the back of the class: Excuse my ignorance, Dr. Nelson, but this looks sort of crazy.... does the input ever go negative? What happens then? What would happen then?

 

[Nelson Pass]

You both get the prize. The prize is a pair of these channels (the ones that work).

 

[Monk55]

Hummmmm

 

[tonyEE]

Don Nelson.... thanks for the prize, but I already paid for one seat... IMHO, the true prize is if you explain what this thing does? The way yo do so well in FW. Yeah, we know about capacitor lives and the Sun goes super nova. ;-)

I'm not one of them Apple owners who happily use things having no clue what is inside... I don't need to know exactly how, but having more than just a general idea.

Remember the proofs in Physics where "the specific solution is left to the engineer" used to be peppered right after the author signed off QED?

I think it has to do with all of them resistors and the gate being at a different (higher) voltage than the source... but then the speaker is in line with Vcc and I figure the load is gonna affect the amplifier.

Wait, I think I got it....

 

[nicoch58]

??

 

[Ben Mah]

Inductor vs transformer, and capacitor blocking DC from mosfet drain vs transformer primary connected directly to tube plate. So not quite the same thing.

 

[tonyEE]

Transformer coupled speaker?. Is Nelson Pass playing games with us? Or am I just not seeing it?

 

[nicoch58]

So not quite the same thing.

I know Ben..but I LOVE the Pa simplicity as in tube amp
btw shade at last ?

 

[Ben Mah]

I think he is having some fun.

 

[nicoch58]

Blame ZM

 

[Zen Mod]

well, I certainly taught him everything I know, so you can probably say that

though, cheekiness is all his

 

[Michael Rothacher]

 

[pinholer]

Is it April?

 

[tonyEE]

Yep, it must be April 1st for sure.

I think I fell for the old "appeal to authority" logical fallacy.