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

Notification

Icon
Error

Login
How much V and mA for Legato
Options
View
Go to last post Go to first unread
Previous Topic Next Topic
ferrilu1  
#1 Posted : Wednesday, January 26, 2011 2:35:58 PM(UTC)
ferrilu1

Rank: Member

Groups: Member
Joined: 11/4/2010(UTC)
Posts: 17
Location: Italy
Hi just to be shure, I have to power a Legato with a Placid BP, so the PlacidBP board has to be set at 12Volt and 360 mA. Correct ?
I know is a stupid question but help me
Many thanks
Gianluca
Back to top

Wanna join the discussion?! Login to your Twisted Pear Audio Support forum accountor Register a new forum account.
Back to top  
Gabbb  
#2 Posted : Thursday, January 27, 2011 6:23:40 AM(UTC)
Gabbb

Rank: Member

Groups: Member
Joined: 11/15/2010(UTC)
Posts: 36
Location: Hungary

Thanks: 1 times
ferrilu1 wrote:
Hi just to be shure, I have to power a Legato with a Placid BP, so the PlacidBP board has to be set at 12Volt and 360 mA. Correct ?
I know is a stupid question but help me
Many thanks
Gianluca


Mine is set to 300mA / rail. (12 volt with the onboard balse enabled)
Back to top
LeonvB  
#3 Posted : Thursday, January 27, 2011 11:41:48 AM(UTC)
LeonvB

Rank: Member

Groups: Member
Joined: 5/23/2010(UTC)
Posts: 708
Location: Netherlands

Thanks: 2 times
Was thanked: 48 time(s) in 45 post(s)
If you are using the 2.1.2 version of the Placid BP, measure the voltages across R13 and R14. These should be around 50mV. If they are lower, adjust VR1 and VR2 accordingly.
Back to top
ferrilu1  
#4 Posted : Thursday, January 27, 2011 2:48:39 PM(UTC)
ferrilu1

Rank: Member

Groups: Member
Joined: 11/4/2010(UTC)
Posts: 17
Location: Italy
Dear Leonvb do you mean with the
Legato load connected? Now I have 0.25Volt on R1 and R2, at the Vout pots I measure 12Volt and 300mA with no load.
When I will connect the Legato board and trim the value of R13 and R14 to 50 mvolt...will I measure 250 mA at the V out ?
Thanks for your helpfull reply
Gianluca
Back to top
LeonvB  
#5 Posted : Thursday, January 27, 2011 3:59:56 PM(UTC)
LeonvB

Rank: Member

Groups: Member
Joined: 5/23/2010(UTC)
Posts: 708
Location: Netherlands

Thanks: 2 times
Was thanked: 48 time(s) in 45 post(s)
Yes, that measurement is done with the load connected. First you do the rough setup, then you fine tune the pots with the load connected. The fine tuning will make sure you're shunting what is needed for your setup (meaning your specific Legato & Placid combo): no more, no less. Please make sure you follow the right procedure for your version of the Placid BP. R13 and R14 are only to be used on V2.1.2. See the Placid BP manual for details.
Back to top
ferrilu1  
#6 Posted : Friday, January 28, 2011 1:48:54 AM(UTC)
ferrilu1

Rank: Member

Groups: Member
Joined: 11/4/2010(UTC)
Posts: 17
Location: Italy
Thanks a lot for your help

gianluca
Back to top
Rss Feed  Atom Feed
Users browsing this topic
GuestUser (2)
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.

Youtube
Copyright © Twisted Pear Audio