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Old 3rd November 2010, 07:49 PM   #481
EUVL is offline EUVL  Europe
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You have work to do, Dave. Pls check email.

Hope you would enjoy it,
Patrick
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Old 3rd November 2010, 08:24 PM   #482
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The MOSFETs I intend to use for the regulators are 2SK3497 / 2SJ618.
Low dropout and low Zout, +ve tempco, ideal for the purpose.
I just checked at Toshiba and they have been categorised as "Not recommended for New Design".
Not yet end of line, but maybe we should also organise a GB before long.
Available at bargain prices from Digikey, but rather long delivery, I was told.

If someone would organise GB and match (we should really, even though to 0.2V and not 20mV), I shall take 20 each.
You can also try them in place of 2SK1530 / 2SJ201 in the F5 / F5X.
If you want to simulate, I have the Spice models.


Patrick
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Old 3rd November 2010, 08:26 PM   #483
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I would be interested in some of those
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Old 3rd November 2010, 08:35 PM   #484
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You already have tons of work still lined up. So do I.
Someone else could organise this one ....

If we cannot get them we can still use 2SK1530/2SJ201 for the regulators.
But these are really End of Line, and are also much more expensive.

We'll have regulators, one way or another.


Patrick

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Last edited by EUVL; 3rd November 2010 at 08:39 PM.
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Old 3rd November 2010, 08:38 PM   #485
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NOOOOOOOOOOOOOO
I don't wan to organise it. I would be interested in purchasing though.
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Old 3rd November 2010, 08:42 PM   #486
EUVL is offline EUVL  Europe
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Check your email.

Patrick
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Old 3rd November 2010, 09:10 PM   #487
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Quote:
Originally Posted by EUVL View Post
The MOSFETs I intend to use for the regulators are 2SK3497 / 2SJ618. ........
FS: matched Toshiba 2SK1530 2SJ201 $16/pair

but - I'll not use them for amplifying purposes ......
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Old 3rd November 2010, 10:00 PM   #488
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Investment purposes?

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Old 3rd November 2010, 10:18 PM   #489
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Quote:
Originally Posted by Nelson Pass View Post
Investment purposes?

naah - I meant on 2SK3497 / 2SJ618 ( they're buried on linked page ) .......

even if maybe better than plain IRFPs for amplification , they look as sorta rough

even for investment purposes
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Old 4th November 2010, 01:54 AM   #490
EUVL is offline EUVL  Europe
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I knew Zhou has them on order, but he has no time to match these days.

> even if maybe better than plain IRFPs for amplification , they look as sorta rough

That means you have not tried them.

I have not either, but I know people who has.


Patrick

Last edited by EUVL; 4th November 2010 at 01:59 AM.
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