2sk77b and 2sk180 new projects

[Zen Mod]

first must have great affair with 6bm8 before reaching mountain top.

been there , done that

made own series* regs (besides amps) when I was a kiddoe

*see how green I was .....

 

[Soundhappy]

How Static Induction Transistor work short animation from Asia :

https://www.youtube.com/watch?v=uj1-tHRM4jg

Hope Nishizawa San cook for us new triode transistors models.

 

[Soundhappy]

Well is not Stanley K film production....but educative with interesting part about depletion.
Thanks to the Learn and Grow Team

 

[woody]

Here is an interesting simplified circuit for the 2sk180.
It does seem a little overkill to use a 300w part for an
amp in the 10 to 15 W range though doesn't it.

 

[dady]

Hi Woody, did you build it?
Ask jama member, he built it.
Best Regards

 

[res07njc]

Why is the voltage 15v? Seems low considering Michael r. found a sweetspot with his 180's ~36vds.

(um, jfets can't handle 36v. so why use jfets?)

 

[Michael Rothacher]

Different loading, different sweet spot. No absolutes.

 

[Zen Mod]

current in uA ?

gimme a break .....

 

[Soundhappy]

I've got your toys right here....

I see first test circuits and some other build headphones amp.
Avant-garde today could be friendly used with vfets or other semis ?

 

[Soundhappy]

current in uA ?

gimme a break .....

ZM no break in avant-garde

 

[Zen Mod]

once , when Papa made some OB spks with Eminence Beta 15 , I asked him why he didn't choose ALpha 15 , having pretty greater Qts

he answered - " I lke my speakers having some magnet"

in other words - I like parts I'm using have some cojones , be it sand or toobz

I believe I could better modulate that 6BQ5 with my eyelashes , than is case with that sissy wannabetoob

 

[Soundhappy]

I believe I could better modulate that 6BQ5 with my eyelashes , than is case with that sissy wannabetoob

With eyes extension modulation is easier no doubt for the biger wannabetoob

 

[Soundhappy]

6P1 Noritake direct heated triodes pre-amplifier in action

https://www.youtube.com/watch?v=g18Z9MhiLIE

FE cool compagnon with the jfet's to Tokin 2SK180 & Sony power stages ?

 

[Soundhappy]

....or John Broskie gridistor ?

New Tube 6P1 & Class-AB + C Circlotron

 

[plasnu]

Anyone has Spice model of Nutube 6P1?

Datasheet
http://www.kyohritsu.jp/eclib/OTHER/DATASHEET/TUBE/nutube6p1a.pdf

 

[Soundhappy]

Anyone has Spice model of Nutube 6P1?

It's very new component on the market.
You can try contact official Korg, Noritake team at :
Nutube – English | korgnutube.com – English

 

[plasnu]

It's very new component on the market.
You can try contact official Korg, Noritake team at :
Nutube – English | korgnutube.com – English

Thank you, let me try to get one from them.

 

[WalterW]

I don't get that anode dissipation of max. 1.7mW
Isn't that a bit low, what amplifier can you build with that, just very low line level???

 

[Soundhappy]

I don't get that anode dissipation of max. 1.7mW
Isn't that a bit low, what amplifier can you build with that, just very low line level???

Yes is low i guess was design specially this way so they don't run hot and life time of use is around 30 K hours.
Is rare new component made for audio purpose.
Compact to be directly soldered on the pcb.
Just imagine this twin direct heated triodes together with jfet's ,
small signal semis or step-up autoformer gain stage in your front end or pre-amp.
Folks in Japan use Nutube into 15 watts chip amp's , headphone amps and regular tube amplifiers.
DHTriodes with SIT's or hockey puck mosfets that sci-fi today but who know Mr. Pass have them....
http://www.diyaudio.com/forums/pass-labs/268608-2sk77b-2sk180-new-projects-4.html#post4972845
or was just Papa joke Kindest regards

 

[Zen Mod]

An externally hosted image should be here but it was not working when we last tested it.