Ironamp Video Posted

[DIYspaceW]

Tokin 2SK182 ES datasheet 🙂

This is a very nice part!!!
Here we could build a nice 50W SET whit transformer output!

 

[Soundhappy]

Yes Maxonic made few sit/ tubes amps models
with this SIT transistors and Yamaha 2SK77B too.

http://www.src-el-main.com/maxonic/catalog_new/sd-015e.pdf

http://www.src-el-main.com/maxonic/catalog_new/sd-013_slc-021_e.pdf

http://www.src-el-main.com/maxonic/catalog_new/sd-016e.pdf

SRC?MAXONIC?Unit

Sony 2SK82 KD-33 pairs on my table 😛

Greetings
🙂

 

[juanitox]

output transfo

any alternative to the Edcor for the 600/8ohm output transformer ?

can't wait the part two of the ironamp to have the power supply details 🙂

 

[vdi_nenna]

Electra-Print will make output transformers to your specs.
They sell a OPT that is particle silver. Primary is copper with a silver wound secondary output. They also make copper/copper OPTs.

 

[DIYspaceW]

any alternative to the Edcor for the 600/8ohm output transformer ?

can't wait the part two of the ironamp to have the power supply details 🙂

Why do you need 600R output transformer? You mean 150R?

 

[juanitox]

😀 oups you are right..

 

[juanitox]

Be careful old Sanken's can be transformed toTokin SIT 's

i have found a source , do you think it is genuine ones?
2SK180 TOKIN Field Effect Transistors TO-3 – 1pcs Refurbished | Sun-Pec

 

[jama]

Hello Juanitox. I have some pieces from this source. I used ebay, but when I received them invoce was from sun-pec. I used lamp circuit to obtain its curves, and I got the same curves that Mr. Rothacher. This transistor can be very interesting... Its curves are similar to PASS SIT 1, I think.

 

[jama]

But its high input capacitance can be a problem..

 

[juanitox]

and the 100watt output transformer too😀

 

[Michael Rothacher]

Its curves are similar to PASS SIT 1, I think.

More similar to 2SK77 🙂

 

[Soundhappy]

Hi Sit's aficionados
Interesting pdf about SIC SIT transistors 50 pages

http://www.dtic.mil/get-tr-doc/pdf?AD=ADA299605

Thanks Zero D for share 🙂

Have a nice day
Christophe

 

[Zero D]

@ soundhappy

Pleasure 🙂 Amazing to think these were invented in the 1950's ! More links etc here http://www.diyaudio.com/forums/solid-state/251170-sit-transistors-audio.html

 

[Soundhappy]

Good Morning or Good Evening

Single-ended Ironamp is very interesting project
but for the moment Mr Rotacher part 2 are in preparation.
What music be with two irons and Sony 2SK82 at the middle ?
Patience is treasure i wait like many others passionate by diy
Greetings 🙂

Proxima?S.I.T?7000 - ?????????????FAL??????????

???????????S.I.T?5000 - ?????????????FAL??????????

 

[Soundhappy]

Hi 😀
With 100 V tension can be possible use of tube rectifiers
in this project like 4G5U to have DC ?
Thanks for response

Best regards

 

[juanitox]

a high current tube rectifier will drop a lot of voltage, waste of power , and add of heat ... we are hot enough with the 2SK82 😀 tube rectifier are nice with low power low cap value in the power supply but with 100000UF CRC who really cares rectifier sound ?

 

[Zen Mod]

why not

sky is the limit

 

[Nelson Pass]

More similar to 2SK77 🙂

In that case, the offering from Sun-Pec is a bargain.

😎

 

[juanitox]

i have received my pair from sun-pec , what to measure to see if they are in working order and real Sit ?

 

[Nelson Pass]

First off, it's bound to be a depletion mode part, so hook it the Drain (case)
up to a +12 volt/2 amp or so power supply, put a 10 ohm power resistor or so
from Source to Ground, and attach the Gate to Ground through a 1K resistor,
and then report back what voltage appears across the 10 ohm resistor.

Make a point of getting the G and S pins correct.

😎