Welcome Guest! To enable all features please Login or Register.

Notification

Icon
Error

Login


6 Pages«<456
Options
View
Go to last post Go to first unread
AlexanderT  
#101 Posted : Thursday, March 20, 2014 12:06:55 PM(UTC)
AlexanderT

Rank: Member

Groups: Member
Joined: 2/4/2014(UTC)
Posts: 42
Ukraine

Thanks: 6 times
Was thanked: 3 time(s) in 3 post(s)
Originally Posted by: avr300 Go to Quoted Post
That's not the way I read the question.
AlexT has an old kit (board and a bunch of components not yet mounted). Recently bought and not build yet.
He want to buy the new board, adopt the components from the old kit and add the remaining.

Thanks, yes - that is what i mean.

I guess i'll wait for that BOM and see if older parts will work with new PCB with maybe a few changes. Can assemble Legato meanwhile
Brian Donegan  
#102 Posted : Friday, March 21, 2014 3:45:21 PM(UTC)
Brian Donegan

Rank: Administration

Groups: Administration, Customer
Joined: 10/24/2006(UTC)
Posts: 2,868
Location: Massachusetts, USA

Thanks: 2 times
Was thanked: 141 time(s) in 134 post(s)
I just created a new thread for the Placid HD 2.0 Beta and moved the relevant posts to it...


http://www.twistedpearau..._Placid-HD-2-0-Beta.aspx
dsolodov  
#103 Posted : Sunday, March 30, 2014 5:03:26 AM(UTC)
dsolodov

Rank: Member

Groups: Member
Joined: 8/22/2010(UTC)
Posts: 38
United States

Thanks: 14 times
Thank you avr300 and TPA! I completed the mod for C2 & C3, replaced C1 with 33000uf, and applied the mod for the error amplifier. Prior to the mods my Fluke 287 was reporting ~0.25mVAC on the Vout. Now ~mVAC is zero on Vout!
avr300  
#104 Posted : Sunday, March 30, 2014 10:44:58 AM(UTC)
avr300

Rank: Member

Groups: Member
Joined: 6/17/2008(UTC)
Posts: 921
Denmark

Thanks: 1 times
Was thanked: 70 time(s) in 69 post(s)
;-)

Glad to be able to help you.
t-dog  
#105 Posted : Friday, June 20, 2014 1:00:07 PM(UTC)
t-dog

Rank: Member

Groups: Member
Joined: 1/7/2012(UTC)
Posts: 15
Location: Australia

Thanks: 6 times
Many thanks Russ and avr300 - this thread helped me remove the ripple from my Placid HDs.

For the record, my VREF was very clean (at the base of Q6), but I had 6mV ripple on the outputs. The ripple must have been getting into the error amp via the emitters because the RC mod of Russ' fixed it.

My v2.1 Placids should arrive soon and I hope this does not happen again.

Cheers, thanks again,
p

Edited by user Friday, June 20, 2014 1:01:05 PM(UTC)  | Reason: typos

Russ White  
#106 Posted : Friday, November 7, 2014 7:52:32 PM(UTC)
Russ White

Rank: Administration

Groups: Administration, Customer
Joined: 10/24/2006(UTC)
Posts: 3,979
Location: Nashville, TN

Thanks: 25 times
Was thanked: 89 time(s) in 83 post(s)
The culmination of this work:

http://www.diyaudio.com/...passion.html#post4115080

Thanks to everyone!
igy137  
#107 Posted : Saturday, July 25, 2015 8:11:45 AM(UTC)
igy137

Rank: Member

Groups: Member
Joined: 10/9/2012(UTC)
Posts: 25
Switzerland

Thanks: 1 times
Hi,

When applying the first mod (http://www.twistedpearaudio.com/forum/yaf_postsm18992_Ripple-at-output.aspx#post18992), how important is to keep 221Ohm? I've only 255Ohm 1/8w at home. Will this do the job? Is there any specific power req for the resistor?

Thx,
igy
avr300  
#108 Posted : Saturday, July 25, 2015 8:41:23 AM(UTC)
avr300

Rank: Member

Groups: Member
Joined: 6/17/2008(UTC)
Posts: 921
Denmark

Thanks: 1 times
Was thanked: 70 time(s) in 69 post(s)
It will be just fine
thanks 1 user thanked avr300 for this useful post.
igy137 on 7/25/2015(UTC)
Rss Feed  Atom Feed
Users browsing this topic
GuestUser (9)
6 Pages«<456
Forum Jump  
You cannot post new topics in this forum.
You cannot reply to topics in this forum.
You cannot delete your posts in this forum.
You cannot edit your posts in this forum.
You cannot create polls in this forum.
You cannot vote in polls in this forum.