HV Shunt Regulator PCB - Page 3

Brett · 20th September 2008, 12:43 AM

I'm interested in a few PCBs too.

vega65 · 20th September 2008, 08:20 PM

So am I(4 if possible)

AVWERK · 21st September 2008, 10:55 PM

Count me in also for 4 pcb's

Regards
David

jkeny · 21st September 2008, 11:28 PM

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 €6.99 and a pack of 5 2SK369 for €4.99 but no BL variant. I notice the 2SK170V variant is the higher IDSS category of 10-20mA and these are €4.99 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

Algar_emi · 22nd September 2008, 01:28 AM

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.

Thanks...

jkeny · 22nd September 2008, 05:22 PM

No problem - just let me know!

Cambe · 22nd September 2008, 05:46 PM

I will take two PCB's when you are ready.

bambadoo · 22nd September 2008, 10:16 PM

Looks interesting. quite interested yes

JoshK · 23rd September 2008, 02:41 AM

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.

ackcheng · 23rd September 2008, 06:19 AM

There was a mistake with the original PCB posted on Emiles page. Is this version corrected for it?

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20th September 2008, 12:43 AM	#21
Brett diyAudio Member Join Date: Jan 2002	I'm interested in a few PCBs too.

20th September 2008, 08:20 PM	#22
vega65 diyAudio Member Join Date: Nov 2007	So am I(4 if possible)

21st September 2008, 10:55 PM	#23
AVWERK diyAudio Member Join Date: Jan 2004 Location: OC,Calif.	Count me in also for 4 pcb's Regards David

21st September 2008, 11:28 PM	#24
jkeny Banned 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 €6.99 and a pack of 5 2SK369 for €4.99 but no BL variant. I notice the 2SK170V variant is the higher IDSS category of 10-20mA and these are €4.99 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

22nd September 2008, 01:28 AM	#25
Algar_emi diyAudio Member 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. Thanks...

22nd September 2008, 05:22 PM	#26
jkeny Banned Join Date: Feb 2007 Location: Dublin	No problem - just let me know!

22nd September 2008, 05:46 PM	#27
Cambe diyAudio Member Join Date: Aug 2001 Location: USA,NorthCarolina	I will take two PCB's when you are ready.

22nd September 2008, 10:16 PM	#28
bambadoo diyAudio Member Join Date: Feb 2003 Location: West Coast of Norway	Looks interesting. quite interested yes

23rd September 2008, 02:41 AM	#29
JoshK diyAudio Member 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.

23rd September 2008, 06:19 AM	#30
ackcheng diyAudio Member Join Date: Dec 2003 Location: hong Kong	There was a mistake with the original PCB posted on Emiles page. Is this version corrected for it?