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
Thread Tools Search this Thread
Old 26th February 2007, 11:01 PM   #1
Colin is offline Colin  United Kingdom
diyAudio Member
Join Date: Aug 2003
Default Recommended UK transformer for 3875 chipamp?

The time has come at last to build the LM3875 chipamp as I've had Peter's kit long enough to start feeling guilty about it.

The Plitron transformers are prohibitively expensive to buy from here in the UK (postage is more than the transformer), so what other transformers would UK builders recommend?
  Reply With Quote
Old 27th February 2007, 03:08 AM   #2
Nisbeth is offline Nisbeth  Denmark
diyAudio Member
Nisbeth's Avatar
Join Date: Jan 2001
Location: Denmark

  Reply With Quote
Old 27th February 2007, 11:11 AM   #3
Colin is offline Colin  United Kingdom
diyAudio Member
Join Date: Aug 2003
Thanks but I think he's discontinued those.
  Reply With Quote
Old 27th February 2007, 11:29 AM   #4
diyAudio Member
Join Date: Mar 2006
Location: Great Yarmouth, UK

Minimum order of 20, but the delivery is free... and a single big transformer / two smaller ones will very likely be over 20 anyway

I got two 120VA dual 25vac secondaries, dual mono style regulated supplies, 'Multicomp' ones and they work great. These rectified to about 36-37vdc, so you'll probably have to be a bit careful if you're going with an unregulated supply.
  Reply With Quote
Old 28th February 2007, 02:58 PM   #5
CarlosT is offline CarlosT  United States
diyAudio Member
Join Date: Oct 2006
Are these guys anywhere near you? The little encapsulated Avels powering my LM3875 are just peachy and made in England...

  Reply With Quote
Old 28th February 2007, 04:20 PM   #6
Colin is offline Colin  United Kingdom
diyAudio Member
Join Date: Aug 2003
Aha, that looks more like it. I tried hunting online for Holden and Fisher who used to make the very solid, well-built toroids which appeared in early, Olive-case Naim gear, but either they are no more or are hiding. The Avels have a good reputation, though, so thanks for drawing that to my attention.
  Reply With Quote
Old 1st March 2007, 08:02 PM   #7
AndrewT is offline AndrewT  Scotland
diyAudio Member
Join Date: Jul 2004
Location: Scottish Borders
Rapidonline were discounting their non ROHS stock, but I fear they are very depleted now. They have had a -30% offer and a -10% offer just recently. The Non ROHS are more like -50% to -75% on what are very competitive prices.
regards Andrew T.
  Reply With Quote


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
Recommended output valves for this transformer Hi_Q Tubes / Valves 3 8th November 2010 12:08 AM
Grounding chipamp 3875 marcus7601 Chip Amps 10 10th April 2009 10:33 PM
FS chipamp 3386, 3875, 1 enclosure wendell Swap Meet 4 15th June 2008 03:06 PM
Preventing a 3875 chipamp from blowing tweeters bcdzt5 Chip Amps 8 6th February 2008 07:23 PM
Chipamp.com pcb with linkwitz 3875 design akunec Chip Amps 3 7th June 2005 07:06 PM

New To Site? Need Help?

All times are GMT. The time now is 04:27 AM.

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