Did I get the right Transformer? - diyAudio
Go Back   Home > Forums > Amplifiers > Chip Amps

Chip Amps Amplifiers based on integrated circuits

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 11th October 2012, 04:29 PM   #1
diyAudio Member
 
Join Date: Sep 2012
Default Did I get the right Transformer?

I got this kit:

1 LM3886TF amplifier AMP+RECTIFIER FILTER BOARD DIY KIT | eBay

and ordered this transformer for it:
http://www.antekinc.com/details.php?p=688

I just want to make sure I got the correct transformer. I know it's over powered, but that's just because I want to add a sub amp later on.

Any help would be great, thanks! (yea, yea, I should have asked before I ordered, but I thought I'd picked correctly and now I'm having doubts)

Last edited by charliemopps; 11th October 2012 at 04:42 PM.
  Reply With Quote
Old 11th October 2012, 04:40 PM   #2
Mooly is online now Mooly  United Kingdom
diyAudio Moderator
 
Mooly's Avatar
 
Join Date: Sep 2007
Both links seem to bring the same thing up. Amp but no tranny that I can see. What are the specs of the tranny ?
__________________
-------------------------------------------------------
Installing and using LTspice. From beginner to advanced.
  Reply With Quote
Old 11th October 2012, 04:42 PM   #3
diyAudio Member
 
Join Date: Sep 2012
Quote:
Originally Posted by Mooly View Post
Both links seem to bring the same thing up. Amp but no tranny that I can see. What are the specs of the tranny ?
That was weird... but I fixed it. Try the link now.

http://www.antekinc.com/details.php?p=688

Last edited by charliemopps; 11th October 2012 at 04:59 PM.
  Reply With Quote
Old 11th October 2012, 06:21 PM   #4
sreten is offline sreten  United Kingdom
diyAudio Member
 
Join Date: Nov 2003
Location: Brighton UK
Hi, dual 24VAC 300VA will be fine, rgds, sreten.
__________________
There is nothing so practical as a really good theory - Ludwig Boltzmann
When your only tool is a hammer, every problem looks like a nail - Abraham Maslow
  Reply With Quote
Old 11th October 2012, 07:16 PM   #5
Mooly is online now Mooly  United Kingdom
diyAudio Moderator
 
Mooly's Avatar
 
Join Date: Sep 2007
Agreed...
__________________
-------------------------------------------------------
Installing and using LTspice. From beginner to advanced.
  Reply With Quote
Old 11th October 2012, 08:27 PM   #6
diyAudio Member
 
Join Date: Sep 2012
How much more VA/Watts can I run off that transformer without a problem? I want to add a sub later on. Could I get away with another 60 to 120 watts? I'm in the US with 120V 60hz, so according to their spec it should be rated at 360VA right? And what I've got now is 120watts... so 240 total on a 360 transformer?

Thanks for the help!
  Reply With Quote
Old 11th October 2012, 08:49 PM   #7
Mooly is online now Mooly  United Kingdom
diyAudio Moderator
 
Mooly's Avatar
 
Join Date: Sep 2007
In practice (meaning normal programme material) I think it will be fine.

Designing and specifying amps for continuous max rated output is a whole different ball game (and most commercial stuff isn't specified to be used like that either).
__________________
-------------------------------------------------------
Installing and using LTspice. From beginner to advanced.
  Reply With Quote
Old 12th October 2012, 02:58 PM   #8
AndrewT is online now AndrewT  Scotland
diyAudio Member
 
Join Date: Jul 2004
Location: Scottish Borders
a 300VA transformer will give good to adequate per4formance when powering amplifier totally from 150W to 300W.

eg,
5off 60W amplifiers could work very well from a single 300VA transformer, if you choose the correct voltage and (much more difficult) get the grounding correct.
__________________
regards Andrew T.
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Newbie Question - Power Transformer vs Isolation Transformer SparkyPete Tubes / Valves 10 2nd November 2012 07:13 PM
Where you buy iron transformer core for DIY audio transformer tarsik Tubes / Valves 10 27th December 2011 09:15 PM
Dynaco 440 Transformer Cathode/Screen Taps 6P1P 6AQ5 UL transformer TheGimp Tubes / Valves 14 30th October 2011 01:20 AM
TV Fly-Back Transformer as and Audio Transformer Anyone :) AB5NI Everything Else 7 11th June 2011 12:22 AM
toroid Transformer as output Transformer for tube preamp? tone Tubes / Valves 15 2nd February 2003 05:36 AM


New To Site? Need Help?

All times are GMT. The time now is 12:33 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2