HV Shunt Regulator PCB - Page 3 - diyAudio
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Old 20th September 2008, 12:43 AM   #21
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Join Date: Jan 2002
I'm interested in a few PCBs too.
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Old 20th September 2008, 08:20 PM   #22
vega65 is offline vega65  Norway
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So am I(4 if possible)
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Old 21st September 2008, 10:55 PM   #23
AVWERK is offline AVWERK  United States
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Count me in also for 4 pcb's

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Old 21st September 2008, 11:28 PM   #24
jkeny is offline jkeny  Ireland
Join Date: Feb 2007
Location: Dublin
Just reading this thread as I currently have fascination with CCSs. I've used Gary Pimm's CCS and find it such a versatile circuit and reportedly great sounding. How does this circuit equate with GP's circuit on the sonics?

I noticed your source for 2SK170BL was given as Donberg and as I'm in Ireland & I had a look & saw a pack of 5 2SK170BL for Ä6.99 and a pack of 5 2SK369 for Ä4.99 but no BL variant. I notice the 2SK170V variant is the higher IDSS category of 10-20mA and these are Ä4.99 for 5.

If the international shipping is high I can act as a shipping house for a group order if interested - just need to order some extra to cover my postage costs to wherever you are. Others have done this for me from the US so I'm happy (and surprised) to be able to return the favour
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Old 22nd September 2008, 01:28 AM   #25
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Join Date: Oct 2002
Location: Canada, Qc
This project is stop for now because I'm in the process of selling my house. However, the interest seems to be so great, that I may start a group buy and have commercially made PCB.

I would also try to include the 2SK369-V FET that are difficult to source, maybe JKeny can help with that.

Don't forget that I still need to test the PCB design first
I'm planning to test it this week.

I'll let you know.

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Old 22nd September 2008, 05:22 PM   #26
jkeny is offline jkeny  Ireland
Join Date: Feb 2007
Location: Dublin
No problem - just let me know!
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Old 22nd September 2008, 05:46 PM   #27
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Join Date: Aug 2001
Location: USA,NorthCarolina
I will take two PCB's when you are ready.

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Old 22nd September 2008, 10:16 PM   #28
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Join Date: Feb 2003
Location: West Coast of Norway
Looks interesting. quite interested yes
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Old 23rd September 2008, 02:41 AM   #29
JoshK is offline JoshK  Canada
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Join Date: May 2004
Location: Toronto, ON
i am trying to digest the circuit. i am not up on all my ss circuitry. can someone tell me if my assumptions are correct.

t1/t2 and local circuitry is a ccs, t4 is the shunt element, u1 is the error amp. i am assuming that u4 is for regulating the 10.3v output and that t3 and t5 are for setting the voltages for u1.

i am not sure why one wants a 10.3v output. 12.6v i'd understand.

why use somewhat expensive/scarce jfets for t3 and t5, hasn't there got to be something cheaper and easier to source.
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Old 23rd September 2008, 06:19 AM   #30
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Location: hong Kong
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There was a mistake with the original PCB posted on Emiles page. Is this version corrected for it?
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