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WTB: Genuine Toshiba 2SK982 / 2SJ148

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tagheuer

Member
Joined 2003
ticknpop said:
I have some- What are you building? Borbely power amp ?
You can build Borbely line amp with only 170/74 and 216/79 outputs.
I only want a Tag Heuer Carrera for them :D
Click to expand...

Hi ticknpop,

I'm building a borberly shunt regulator to replace my JC-1AC pre-preamp power supply which was busted.

And for the future, I would like build one to three shunt regulators for powering BIII DAC legato I/V converter.

Unfortunately, the carrera is not in my radar :)
 
B

BenY

Member
Joined 2002
You could replace this complemantry FET pair with a high beta BJT pair without any problems...but you`ll have to do some small modifications to the circuit, it shouldn`t be a big problem to do..Even 2SA1015GR/2SC1815GR would be a reasonably good substitute.
 
T

tagheuer

Member
Joined 2003
BenY said:
You could replace this complemantry FET pair with a high beta BJT pair without any problems...but you`ll have to do some small modifications to the circuit, it shouldn`t be a big problem to do..Even 2SA1015GR/2SC1815GR would be a reasonably good substitute.
Click to expand...

Thanks for the info. But I'm just a noob who doesn't really know how to modify circuit.

Basically what I'm trying to do is to build a shunt regulator power supply based on pcb from Jims Audio.

All FET low-noise super shunt regulator PCB Borbely ! | eBay
 
T

ticknpop

Member
Joined 2005
Paid Member
I build Borbely shunts too (original pass devices were 2sk2013/2SJ313) .
I can sell 6 pairs J148/K982 for $55 with Canada Post included. Not cheap, but cheaper than BDEnt and I really don't need to sell them, because I will build a few more Borbely shunts for a BIII Dac also ( with Borbely discrete jfet I/V converter also powered by Borbely Shunts) They are used in the Borbely Millenium Power amp too that I have, so I need to hang on to a few spares. Do you have 389/109 for input differentials ? I wouldn't use 109 here if you could find them. Even matched 170/74 are getting hard/ expensive to come by. I stocked up years ago before the great jfet famine.............. Even have the very low noise 2SK147/2SJ72 for phono inputs that I got from Erno 20 years ago :eek:
 
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T

tagheuer

Member
Joined 2003
ticknpop said:
I build Borbely shunts too (original pass devices were 2sk2013/2SJ313) .
I can sell 6 pairs J148/K982 for $55 with Canada Post included. Not cheap, but cheaper than BDEnt and I really don't need to sell them, because I will build a few more Borbely shunts for a BIII Dac also ( with Borbely discrete jfet I/V converter also powered by Borbely Shunts) They are used in the Borbely Millenium Power amp too that I have, so I need to hang on to a few spares. Do you have 389/109 for input differentials ? I wouldn't use 109 here if you could find them. Even matched 170/74 are getting hard/ expensive to come by. I stocked up years ago before the great jfet famine.............. Even have the very low noise 2SK147/2SJ72 for phono inputs that I got from Erno 20 years ago :eek:
Click to expand...

PM sent. Thanks.
 
orianoalfei

orianoalfei

Member
Joined 2012
tagheuer said:
Thanks for the info. But I'm just a noob who doesn't really know how to modify circuit.

Basically what I'm trying to do is to build a shunt regulator power supply based on pcb from Jims Audio.

All FET low-noise super shunt regulator PCB Borbely ! | eBay
Click to expand...

Hello.
Happy New Year.
I've also built the shunt JIMS AUDIO.
Let me know if function well.
Have you encountered difficulties.
What are the components to be selected.
Where to be careful.
I have some high-frequency oscillations in the negative channel.
The positive seems to be fine.
is the first and I do not have experience.
Thank you.
 
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