John Linsley Hood Ripple Eater - Page 12 - diyAudio
Go Back   Home > Forums > Commercial Sector > Group Buys

Group Buys Members group buys

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 4th July 2010, 01:55 AM   #111
diyAudio Member
 
Join Date: Jan 2009
Location: Shropshire, UK
OK thank's Alex

I found some 7818 / 7918 on ebay.

I'll try the power supply you advised or even this one:

Universal +/-15V Power Supply - Jaycar Electronics

I could swap the regulators for the 78xx and increase the capacitance of the smoothing caps
  Reply With Quote
Old 4th July 2010, 10:51 AM   #112
diyAudio Member
 
Join Date: Oct 2002
Location: UK
Default BOM etc

Hi Rich,

You'll find the BOM, schema and a board image in post #71. Please feel free to have a check for any errors. We've already been through it once, but will do so again before publication. Thanks for stepping in with the info, Alex - yes I was in bed!!

I will be finishing the build manual by building a pair of production boards to the BOM therein. This will validate the BOM and provide some photos for inclusion. The Manual is aimed at newcomers, but will include, for more experienced builders, a summary at the start of the build section. Actually, all you need is the BOM and you'd be able to plop this project together in no time at all.

The board has been designed to accept the 4700uF 10V low ESR caps.

BTW, I do need to amend the schema to include the test points and sample voltages. The schema is good otherwise.

Cheers

Jon

Last edited by jonclancy; 4th July 2010 at 10:58 AM.
  Reply With Quote
Old 4th July 2010, 12:08 PM   #113
diyAudio Member
 
Join Date: Jan 2009
Location: Shropshire, UK
Excellent Jon, Thanks

I did quickly skim through the thread to look for the BOM but obviously missed the post there.

Much appreciated.

I can help with the GT6 web page if you like. Have PM'd you.

Rich
  Reply With Quote
Old 4th July 2010, 12:14 PM   #114
diyAudio Member
 
Join Date: Oct 2002
Location: UK
I need all the help I can get with that one!!! It's got me stumped!

Thanks Rich!

Jon
  Reply With Quote
Old 4th July 2010, 04:21 PM   #115
diyAudio Member
 
Join Date: Sep 2008
Location: UK
A few links that may be of help.

For the 2SA1930 and 2SC5171, the following companies/ebay people have been used.

eBay My World - audiowind-2005
Cricklewood Electronics - CCTV. CCTV Equipment. CCTV Systems. Digital CCTV Cameras
ELECTRONIC COMPONENTS, SEMICONDUCTORS, PARTS, TRANSISTORS, INVERTERS, TRANSFORMERS | DALBANI

They'll be plenty of others, but people who have built previous versions of this circuit have received genuine parts from the people above.

The C4 caps: Good results have been had using Suntan 2200uF or 4700uF low esr caps, available from Jaycar Electronics.

Also, some found that using a Panasonic FC for the 100uF cap on the output maintained the 'neutrality' of the sound (Dons flame suit, etc, etc)

It'll be interesting to get some feedback from you guys who are buying the board, once you have built it, as a lot of work has gone into this board.
  Reply With Quote
Old 5th July 2010, 12:54 PM   #116
diyAudio Member
 
Join Date: Oct 2002
Location: UK
Thanks to Rich's help, I have just fixed the links on the www.gt6.co.uk info site.

Cheers, Rich!!
  Reply With Quote
Old 5th July 2010, 01:33 PM   #117
diyAudio Member
 
Join Date: Jan 2009
Location: Shropshire, UK
No worries fella, my pleasure. Glad it's sorted
  Reply With Quote
Old 5th July 2010, 02:19 PM   #118
fff0 is offline fff0  Singapore
diyAudio Member
 
Join Date: Jul 2008
Hi Jon,

Can I replace 2SA1930/ 2SC5171 with D45H11/ D44H11 to achieve 3A at ~15v?
  Reply With Quote
Old 5th July 2010, 02:27 PM   #119
diyAudio Member
 
Join Date: Oct 2002
Location: UK
The board hasn't been tested beyond around 650mA. But, as this version uses 2oz copper, it may take more. You would need to run without the Current Limiting section of the circuit, and should make sure that you have some sort of current limiting device in front (like a 317/337).

SandyK would be able to advise in more detail. I'm not the tech bod WRT this, just the salesman (and a bit of silkscreen tidying)!!!
  Reply With Quote
Old 7th July 2010, 05:38 PM   #120
diyAudio Member
 
Join Date: Oct 2002
Location: UK
Seeing as I have just produced this image to go in the Build Manual, I thought I'd share it here.......

Attached Images
File Type: png JLHSchematic.png (30.4 KB, 376 views)
  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
John Linsley Hood FM tuner article/s djsb Analogue Source 44 6th August 2013 01:59 PM
Help wanted please - Linsley Hood article index Geoff Everything Else 2 5th March 2013 04:57 AM
John Linsley Hood RIAA Preamp? roger-k Solid State 5 16th March 2007 07:10 PM
John Linsley Hood "Valve and Xstor" amps jackinnj Swap Meet 0 4th July 2002 02:14 AM
Linsley Hood SE 10W amp Asen Solid State 35 8th October 2001 09:07 PM


New To Site? Need Help?

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