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

Notification

Icon
Error

Login
TXPS Voltage question
Options
View
Go to last post Go to first unread
Previous Topic Next Topic
sts9fan  
#1 Posted : Tuesday, November 9, 2010 8:51:07 AM(UTC)
sts9fan

Rank: Member

Groups: Member
Joined: 10/25/2007(UTC)
Posts: 9
Location: MA
Hi

I have an old TXPS laying around that I would like to use for another project. Can the regulated section be changed from 9v to 5v? Can it do 5A? I think I remember that you only need to change a resistor but I am having a hard time finding the info. I checked the data sheets of the ST semiconductors but I could not figure it out. Anyway any information would be great.
Thanks
Kris
Back to top

Wanna join the discussion?! Login to your Twisted Pear Audio Support forum accountor Register a new forum account.
Back to top  
Russ White  
#2 Posted : Tuesday, November 9, 2010 8:53:09 AM(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)
You could make it to 5V but you will want to calculate the power dissipation.
Back to top
WWW
sts9fan  
#3 Posted : Tuesday, November 9, 2010 9:04:15 AM(UTC)
sts9fan

Rank: Member

Groups: Member
Joined: 10/25/2007(UTC)
Posts: 9
Location: MA
So are you saying its a bad idea?
Back to top
Russ White  
#4 Posted : Tuesday, November 9, 2010 9:06:01 AM(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)
Well unless your voltage drop is quite low, 5A is a lot current.
Back to top
WWW
sts9fan  
#5 Posted : Tuesday, November 9, 2010 9:10:32 AM(UTC)
sts9fan

Rank: Member

Groups: Member
Joined: 10/25/2007(UTC)
Posts: 9
Location: MA
Well I really only need ~3A for the squeezebox touch but I was thinking of head room.
Back to top
Russ White  
#6 Posted : Tuesday, November 9, 2010 9:13:51 AM(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)
What is your voltage going to be after rectification?
Back to top
WWW
sts9fan  
#7 Posted : Tuesday, November 9, 2010 9:15:03 AM(UTC)
sts9fan

Rank: Member

Groups: Member
Joined: 10/25/2007(UTC)
Posts: 9
Location: MA
12V
Back to top
Russ White  
#8 Posted : Tuesday, November 9, 2010 9:47:08 AM(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)
I would suspect that is going to be more than those heat sinks can handle with that kind of drop.
Back to top
WWW
sts9fan  
#9 Posted : Tuesday, November 9, 2010 10:51:47 AM(UTC)
sts9fan

Rank: Member

Groups: Member
Joined: 10/25/2007(UTC)
Posts: 9
Location: MA
well it was worth a try. Thanks for the input.
Back to top
Rss Feed  Atom Feed
Users browsing this topic
GuestUser (5)
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