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Old 25th July 2008, 03:08 PM   #1501
h_a is offline h_a  Europe
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Seems the 2SK1530A is not a Toshiba part, but a Sony Mosfet used in some high-$ vintage gear (if you call gear from 2000 vintage, that is).

Have fun, Hannes
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Old 25th July 2008, 03:08 PM   #1502
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Nelson pcb,
And when are these little Nelson Pass pcb's going to be available? I would like about 4 of them.

On another note. What is the preferred method of utilizing jfets in the input section when the voltage available is beyond the fjets range. Many members have their own ideas on this ie, resistor, cascode, series with mosfet etc. Which works best? Thanks. Tad
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Old 25th July 2008, 03:15 PM   #1503
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Quote:
Originally posted by h_a
not a Toshiba part
Same Toshiba part, but a special edition with goldplated leads.
The A-types were for sale briefly, but at 10 times the cost of the regular version.
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Old 25th July 2008, 03:29 PM   #1504
h_a is offline h_a  Europe
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Quote:
And when are these little Nelson Pass pcb's going to be available?
Master says soon. So somewhere this year?

Quote:
What is the preferred method of utilizing jfets in the input section when the voltage available is beyond the fjets range
You can just cascode it - with whatever you want (bjt, mosfet, jfet). The resistor you mention is the load and will not ensure that the jfet sees sufficiently low voltage.

Have fun, Hannes
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Old 25th July 2008, 04:14 PM   #1505
EUVL is offline EUVL  Europe
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> I'm waiting for Nelson's pcbs. Sure I could do my own, but having at least a single Nelson Pass piece is a bit special

This place is called DIY Audio ??

> I'm still thinking of the Toshibas, it's just that I have more than enough Fairchilds already at hand...

Why not just build the Fairchild first ?
Then you can always decide to swap the Toshibas in later on.


Patrick
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Old 25th July 2008, 04:36 PM   #1506
Zen Mod is offline Zen Mod  Serbia
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Quote:
Originally posted by EUVL
> I'm waiting for Nelson's pcbs. Sure I could do my own, but having at least a single Nelson Pass piece is a bit special

This place is called DIY Audio ??

.......


Patrick

you forgot smiley there .

maybe someone wants 4 Papa's pcbs to hang them on wall , as pride and joy ?
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Old 25th July 2008, 04:39 PM   #1507
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Quote:
Originally posted by EUVL
[BIn any case, don't do armchair DIY...
Patrick [/B]
For that I have a powerhouse of researchers, experimenters and developers that include you, NP, JC, BC, etc...throw in JaccoV when you're going through your parts list and you want a good laugh...then I start building

Thank you.
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Old 25th July 2008, 04:47 PM   #1508
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Actually, i was thinking of using the F5 boards as body jewelry at the nudy beach.
Single Ended, of course.
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Old 25th July 2008, 04:47 PM   #1509
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This may be DIY Audio...though around here if you snooze you lose.

Power J-Fet anyone?
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Old 25th July 2008, 04:53 PM   #1510
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Sure, you got some P-channel PWRLites for moi ?
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