Threshold fet ten/pc schematics - Page 3 - diyAudio
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Old 29th November 2004, 02:07 AM   #21
aht is offline aht  Thailand
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Default This's Fet1

Do you have Fet10 model .Please send me some link of Fet10
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Old 29th November 2004, 02:12 AM   #22
SkyChu is offline SkyChu  Taiwan
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Sorry Aht !
I don't have schematic.
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Old 26th September 2005, 11:25 AM   #23
aht is offline aht  Thailand
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Thumbs up Pardon me please...SKY CHU

A picture that you had posted is really FET -10HL

But now I want to know about it's voltage power supply rails.
I had seen SKY CHU said "+/- 25V really ?

But on www.diyzone.net told me +/- 12V ?!?

Now it'll be to a mega project with 2SK389 instead of 2N5566, BS250 instead of 3N172...PCB is coming soon.

Does anyone can find ERO CAP MKT1813 10uF/100V ?

regard
AHT
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Old 26th September 2005, 11:57 AM   #24
aht is offline aht  Thailand
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Cool This's original pcb

But I don't use it's power supply because I have specially supply more than which one.It's use voltage error correction by reference voltage of 78L12/79L12 flow through UA741 for compared voltage IN:OUT and used 2N3055/MJ2955 for variabled current output :-) (this concept come from hi-end DAC power supply)

I hope there is somebody interested this concept

regard
AHT
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Old 26th September 2005, 12:09 PM   #25
aht is offline aht  Thailand
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Smile This's schematic of Threshold Fet-10HL

After I asked Mr.NP he told me that 2SK389 can instead of 2N5566 then I just to do it for a project.

Input of them are 2SK389BL (jfet) in parallel mode cascode with bipolar transistor for reduce capacitance and use transistor ccs.

BS250 (mosfet) used for matcing impedance of 1st stage & 2nd stage, output stage is normally push-pull bipolar transistor such as KANEDA & JC2, I think a perfect matched parts enough for set sound quality & stability.

Now I used this circuit & Aleph P1.7 in different case so don't ask me for compare both them

regard
AHT
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Old 26th September 2005, 12:34 PM   #26
aht is offline aht  Thailand
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Default This's my power supply schematic

I can't remember I got this schematic from...?

But it's can use with several circuit such as phono stage, preamp, DAC, etc.

Now I got some problem with output capacitor filter because original supply from www.diyzone.net don't use it or they're use 1uF on preamp board ?!?

regard
AHT
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Old 30th September 2005, 02:27 AM   #27
SkyChu is offline SkyChu  Taiwan
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Default Re: Pardon me please...SKY CHU

Quote:

But now I want to know about it's voltage power supply rails.
I had seen SKY CHU said "+/- 25V really ?

But on www.diyzone.net told me +/- 12V ?!?

I said "the output of extend power supply box is +/- 25V"
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Old 30th September 2005, 01:06 PM   #28
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Question Hi, I'm new about solidstate

Does anybody tell me what's THRESHOLD ? (threshold current = ?)
Sorry for my so easy question

ANALOG GUY
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Old 30th September 2005, 03:21 PM   #29
eLarson is offline eLarson  United States
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It was a company that Nelson founded prior to Pass Labs.
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Old 30th September 2005, 10:33 PM   #30
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I recall the schematic as follows:
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