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Hockey Puck SIT 2SK180 by Tokin source NOS
Hockey Puck SIT 2SK180 by Tokin source NOS
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Old 10th October 2017, 12:49 AM   #61
billshurv is offline billshurv  United Kingdom
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Hockey Puck SIT 2SK180 by Tokin source NOS
Now THAT is cool!
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Old 10th October 2017, 01:07 PM   #62
hifibluedevil is offline hifibluedevil  United States
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funny the base has a V shape, hence the vfet
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Old 10th October 2017, 07:18 PM   #63
Soundhappy is offline Soundhappy  France
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Ancestral Grand Father of all transistors
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Old 10th October 2017, 07:48 PM   #64
Soundhappy is offline Soundhappy  France
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Quote:
Originally Posted by Nelson Pass View Post
I can't resist....

I own this photo of the first transistor, autographed by the inventors.

(one of the signatures has faded with the years - cheap ball point pen!)
Thanks Mr Pass for interesting show.
Beautiful collection legendary piece in right hands

The first generation of transistors was revolutionary tech plenty of "mysteries" and not many photos of curve tracer tests.
Something to do with rare museum "crystals"
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Old 16th March 2018, 08:22 PM   #65
Soundhappy is offline Soundhappy  France
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1pc THF-51S TOKIN V-FET(SIT) (similar 2SK77,2SK180) NOS Original, Japan Made | eBay

Bunch of Obtainium Unobtainum's
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Old 7th April 2018, 07:14 AM   #66
Soundhappy is offline Soundhappy  France
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Click the image to open in full size.
On the video made by Linear Integrated Systems at Burning Amp Festival
Mr Pass speak about this Tokin 400 W | 500 W triode transistors Japan seller source.
Sequence start 1:07:37
Papa talk BAF 2017
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Old 7th April 2018, 09:11 AM   #67
Zen Mod is offline Zen Mod  Serbia
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Hockey Puck SIT 2SK180 by Tokin source NOS
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Old 7th April 2018, 09:36 PM   #68
Msr Mojo is offline Msr Mojo
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Flakey Foont: "Mr. Natural! What does it all mean?"

Mr. Natural: "Don't mean SIT"

(Just couldn't resist)
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Old 8th April 2018, 01:59 PM   #69
maxlorenz is online now maxlorenz  Chile
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I bought my 180's from that guy. Very good. They work great on my single ended common source amp with a "cascoded-compound CFP" differential amplifier on the input.

I asked for matched pairs for the 51's but still no answer... I bought a monster heatsink for them

Dear Mr. Pass,

IF/when I will cascode the output common-source SIT (with BJT or Mosfet), will the cascodying common-base element be "slaved" to follow the SIT transfer characteristics???

Many thanks,
M.
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Old 8th April 2018, 02:41 PM   #70
Zen Mod is offline Zen Mod  Serbia
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Hockey Puck SIT 2SK180 by Tokin source NOS
cascode is , when done properly , considered as "invisible"
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