Threshold NS10 Lineamp PCB - Page 58

luvdunhill · 11th August 2009, 04:12 PM

Quote:

Originally posted by d to the g
I use a spendy Keithley system at work to measure contact resistance in the tens of MOhm, with an applied voltage of 3mV. Is that good enough?

only good enough if you volunteer

d to the g · 11th August 2009, 05:08 PM

Quote:

Originally posted by luvdunhill

only good enough if you volunteer

Estimates on cost to populate this bad boy? I splurged buying parts for the new phonoclone and am cash poor at the moment.

If you wanted me to just a piece and ship it back I'd do that too. It's not my normal "smash stuff" testing, but I'd be more than happy to do it.

luvdunhill · 11th August 2009, 05:54 PM

I haven't added it all up yet. Here's a schematic with a BOM for two vendors, as well as a silk screen of the boards:

http://picasaweb.google.com/lh/photo...eat=directlink

http://picasaweb.google.com/lh/photo...eat=directlink

luvdunhill · 20th August 2009, 03:14 PM

well, they work

I also am still looking for a European tester. I cannot believe we had interest in 1000+ of these, and I'm hearing crickets chirp for prototyping help...

perhaps everyone is having fun at that ex-YU site

brianco · 20th August 2009, 05:40 PM

Quote:

Originally Posted by luvdunhill

well, they work

I also am still looking for a European tester. I cannot believe we had interest in 1000+ of these, and I'm hearing crickets chirp for prototyping help...

perhaps everyone is having fun at that ex-YU site

You can count me in for deja vu

- I used to have one many many years ago.

CeeVee · 27th August 2009, 04:39 PM

count me in as well.

I'll be happy to test, i'm planning to use it to power my new I/V boards for my Shanling....Thread elsewhere here.

peranders · 18th November 2009, 08:46 AM

I'm about to move older group buy wiki pages. Can anybody enlighten me about this group buy? The wiki list is gigantic but didn't anything happen?

AndrewT · 10:01 AM

Quote:

Originally Posted by peranders

I'm about to move older group buy wiki pages. Can anybody enlighten me about this group buy? The wiki list is gigantic but didn't anything happen?

is this the GB for the four regulators based on Cetoole's design?

If so, it was on hold till the oscillation problem had been solved.

I suspect this GB can be revived if the PCB were kept small (very cheap and easily fitted inside source equipment) and a shuntie, maybe a Salas type were substituted.

BUT,
the attraction to so many potential buyers was the extremely small size and the very economic PCB incorporating 4 projects in the single board.

CeeVee · 11:34 AM

Hi,

P-A, AndrewT, the oscilation persists, the PCB i got from luvdunhill shows ( i can hear it too ) HF oscilation in my Orions.

peranders · 18th November 2009, 04:52 PM

Is this oscillation on every board or only under certain conditions?

18th November 2009, 08:46 AM	#577
peranders Electrons are yellow and more is better! diyAudio Member Join Date: Apr 2002 Location: Göteborg, Sweden Blog Entries: 4	I'm about to move older group buy wiki pages. Can anybody enlighten me about this group buy? The wiki list is gigantic but didn't anything happen? __________________ /Per-Anders (my first name) or P-A as my friends call me Tube Buffered Gainclone in work \|Thread

18th November 2009, 11:31 AM	#579
CeeVee diyAudio Member Join Date: Dec 2006	Hi, P-A, AndrewT, the oscilation persists, the PCB i got from luvdunhill shows ( i can hear it too ) HF oscilation in my Orions. Last edited by CeeVee; 18th November 2009 at 11:34 AM.

18th November 2009, 04:52 PM	#580
peranders Electrons are yellow and more is better! diyAudio Member Join Date: Apr 2002 Location: Göteborg, Sweden Blog Entries: 4	Is this oscillation on every board or only under certain conditions? __________________ /Per-Anders (my first name) or P-A as my friends call me Tube Buffered Gainclone in work \|Thread

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11th August 2009, 05:54 PM	#573
luvdunhill diyAudio Member Join Date: Jul 2006	I haven't added it all up yet. Here's a schematic with a BOM for two vendors, as well as a silk screen of the boards: http://picasaweb.google.com/lh/photo...eat=directlink http://picasaweb.google.com/lh/photo...eat=directlink

20th August 2009, 03:14 PM	#574
luvdunhill diyAudio Member Join Date: Jul 2006	well, they work I also am still looking for a European tester. I cannot believe we had interest in 1000+ of these, and I'm hearing crickets chirp for prototyping help... perhaps everyone is having fun at that ex-YU site

27th August 2009, 04:39 PM	#576
CeeVee diyAudio Member Join Date: Dec 2006	count me in as well. I'll be happy to test, i'm planning to use it to power my new I/V boards for my Shanling....Thread elsewhere here.

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