Les - Sage Audio - New Revelations - Page 9

homemodder · 1st March 2012, 11:22 AM

Modern versions of these mosfets are still available, note that these are vertical parts not laterals and the reason you see vbe multiplier. We could build this by using 2sj200/2sk1530.

AndrewT · 1st March 2012, 11:35 AM

Brain,
can you confirm they are To247 package?

Then we know they can't be 201/1530.

brianmarchant · 12:13 PM

Quote:

Originally Posted by AndrewT

can you confirm they are To247 package?

Hi Andrew, no, they're not TO-247 packages. The ones in my photo exactly match the Toshiba TO-3P package, right down to the three little manufacturing "dots".

See here:
TOSHIBA Packaging Info

Hitachi TO-3P packages look to be an exact match (visually) too:
HITACHI Example (example of package, not exact device).

Other TO-3P packages don't look quite the same (trawling through lots of google images).

bear · 2nd March 2012, 01:36 PM

So Andrew, what do you make of the use of the current sources regarding the bias and overload protection??

_-_-bear

AndrewT · 2nd March 2012, 01:39 PM

I briefly looked at one of the schematics. But as I came to realise, there are at least 4versions of the mos series and to date no one has agreed if any are accurately portrayed in this Thread.
There is no point in commenting until we have some facts, not conjecture.

bear · 2nd March 2012, 09:09 PM

The supermos500 (?) pdf schematic seems plausible.

I meant to say current mirrors...
That and the zener diodes...

_-_-bear

Simtu · 6th June 2012, 08:28 PM

Just come across this thread;

Still have a pair of Supermos 2 500watt modules as part of a dual mono power amp that I put together around 1990. Still use them occasionally and still working perfectly despite all the horror stories. Was always pretty impressed by the sound. Just finished a pair of Hypex Ncores - amazing difference another 20 years of amp development makes.

bear · 6th June 2012, 10:04 PM

You are saying that you prefer the Hypex amps??

_-_-

nevebloor · 23rd June 2012, 09:22 PM

Would you be interested in selling your Supermos 2's?

jerryo · 20th February 2013, 04:26 PM

There is a nice pair of Supermos 1 mono power amps on eBay at the moment, and in full working order!
Rare chance to buy a pair.

Just thought I would let you all know.

Cheers

2nd March 2012, 01:36 PM	#84
bear expert in tautology diyAudio Member Join Date: Apr 2002 Location: New York State USA	So Andrew, what do you make of the use of the current sources regarding the bias and overload protection?? _-_-bear __________________ _-_-bear http://www.bearlabs.com [...2SJ74 Toshiba bogus asian parts - beware! ] -- Btw, I don't actually know anything, FYI --

2nd March 2012, 09:09 PM	#86
bear expert in tautology diyAudio Member Join Date: Apr 2002 Location: New York State USA	The supermos500 (?) pdf schematic seems plausible. I meant to say current mirrors... That and the zener diodes... _-_-bear __________________ _-_-bear http://www.bearlabs.com [...2SJ74 Toshiba bogus asian parts - beware! ] -- Btw, I don't actually know anything, FYI --

6th June 2012, 10:04 PM	#88
bear expert in tautology diyAudio Member Join Date: Apr 2002 Location: New York State USA	You are saying that you prefer the Hypex amps?? _-_- __________________ _-_-bear http://www.bearlabs.com [...2SJ74 Toshiba bogus asian parts - beware! ] -- Btw, I don't actually know anything, FYI --

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1st March 2012, 11:22 AM	#81
homemodder Account disabled at member's request Join Date: May 2006	Modern versions of these mosfets are still available, note that these are vertical parts not laterals and the reason you see vbe multiplier. We could build this by using 2sj200/2sk1530.

1st March 2012, 11:35 AM	#82
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	Brain, can you confirm they are To247 package? Then we know they can't be 201/1530.

2nd March 2012, 01:39 PM	#85
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	I briefly looked at one of the schematics. But as I came to realise, there are at least 4versions of the mos series and to date no one has agreed if any are accurately portrayed in this Thread. There is no point in commenting until we have some facts, not conjecture.

6th June 2012, 08:28 PM	#87
Simtu diyAudio Member Join Date: Feb 2012 Location: Worcestershire UK	Just come across this thread; Still have a pair of Supermos 2 500watt modules as part of a dual mono power amp that I put together around 1990. Still use them occasionally and still working perfectly despite all the horror stories. Was always pretty impressed by the sound. Just finished a pair of Hypex Ncores - amazing difference another 20 years of amp development makes.

23rd June 2012, 09:22 PM	#89
nevebloor diyAudio Member Join Date: Dec 2007	Would you be interested in selling your Supermos 2's?

20th February 2013, 04:26 PM	#90
jerryo diyAudio Member Join Date: Jun 2007	There is a nice pair of Supermos 1 mono power amps on eBay at the moment, and in full working order! Rare chance to buy a pair. Just thought I would let you all know. Cheers

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