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JFET-only Circlotrons without negative feedback.
JFET-only Circlotrons without negative feedback.
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Old 26th March 2020, 01:36 PM   #31
UltimateX86 is offline UltimateX86  France
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Join Date: Jun 2004
Location: France
only 630PF !!
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Old 26th March 2020, 02:10 PM   #32
Yurik_V is offline Yurik_V  Ukraine
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Join Date: Mar 2006
Location: Brest
Quote:
Originally Posted by padamiecki View Post
is there a difference in sound Sic vs IRFP?
IRFP150 only
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Old 26th March 2020, 03:01 PM   #33
UltimateX86 is offline UltimateX86  France
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Join Date: Jun 2004
Location: France
Quote:
Originally Posted by Svjatoslav View Post
Version for silicon carbides JFET.
In all versions, it is important to check the initial current of the VT1-12 transistors.
Because according to the old passport data, the characteristics are not what those of modern manufacturers.

The version is designed for layout. Because I'm still unfamiliar with powerful SI-C JFET
hi and thanks

where do you found genuine 2sj103 and 2sk246 ?

I have some Y and GR but not BL
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Old 26th March 2020, 03:31 PM   #34
Yurik_V is offline Yurik_V  Ukraine
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Join Date: Mar 2006
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I bought about 10 years ago in Belarus. )
e-bay you can buy pairs J103/K246.
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Old 26th March 2020, 04:03 PM   #35
jpatay is offline jpatay  Ukraine
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Join Date: Jul 2018
Location: Ukraine. Novovolynsk
Quote:
Originally Posted by UltimateX86 View Post

I have some Y and GR but not BL
VT5, VT6 must have a leakage current: 8-10 mA. Then the voltage at the drain- source VT3, VT4 will be 3-3.2 V.
2SJ103BL: 6-14 mA.
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Old 26th March 2020, 07:02 PM   #36
Svjatoslav is offline Svjatoslav  Ukraine
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Join Date: Jun 2010
Location: Berdyansk, Ukraine
JFET-only Circlotrons without negative feedback.
Quote:
Originally Posted by UltimateX86 View Post
hi and thanks

where do you found genuine 2sj103 and 2sk246 ?

I have some Y and GR but not BL
Long time ago purchased. For the "Breeze" Amplifier.
Breeze amplifier.

BF245 tried, but didn't like it. Because they were burned out.
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