DIY Op Amp Buffer Boards - diyAudio
Go Back   Home > Forums > Commercial Sector > Swap Meet

Swap Meet Sell your stuff here, who knows, some other fanatic might be interested!

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 16th August 2011, 06:20 PM   #1
aziltz is offline aziltz  United States
diyAudio Member
 
Join Date: Jun 2010
Location: Williamsburg, VA
Default DIY Op Amp Buffer Boards

I had some PCBs made for a Op Amp based multi-buffer circuit. It was designed with guitar and bass in mind, but it could be useful for other projects as well, volume pedals, piezo buffers, splitters, etc...

Here's where it started

They are nominally $5 each. More info/buy here. The project documents are mostly done, but I'll be updating them when I have time.

I'd be happy to answer any questions here or through PM.
  Reply With Quote
Old 22nd August 2011, 04:46 PM   #2
aziltz is offline aziltz  United States
diyAudio Member
 
Join Date: Jun 2010
Location: Williamsburg, VA
Vacation in Portland. Next Batch goes out August 27th with the finalized version of the build documents.
  Reply With Quote
Old 26th August 2011, 01:29 PM   #3
aziltz is offline aziltz  United States
diyAudio Member
 
Join Date: Jun 2010
Location: Williamsburg, VA
Little hiccup from Irene. Will ship new orders on Monday.
  Reply With Quote
Old 26th August 2011, 05:17 PM   #4
jtjy is offline jtjy  Singapore
diyAudio Member
 
Join Date: Jan 2010
Quote:
Originally Posted by aziltz View Post
Little hiccup from Irene. Will ship new orders on Monday.
Assuming my amp doest not have a pre out, can i buffer the input for 2 output? 1 for amp and 1 to active sub

Last edited by jtjy; 26th August 2011 at 05:38 PM.
  Reply With Quote
Old 26th August 2011, 05:44 PM   #5
aziltz is offline aziltz  United States
diyAudio Member
 
Join Date: Jun 2010
Location: Williamsburg, VA
yes, that would be the same as the splitter application I've listed. I don't yet know if it will drive an isolation transformer.
  Reply With Quote
Old 26th August 2011, 05:49 PM   #6
jtjy is offline jtjy  Singapore
diyAudio Member
 
Join Date: Jan 2010
Quote:
Originally Posted by aziltz View Post
yes, that would be the same as the splitter application I've listed. I don't yet know if it will drive an isolation transformer.
wad do u mean by isolation transformer? also which config should i use and how many boards do i require for the above application? sorry i just started in diying audio
  Reply With Quote
Old 26th August 2011, 05:53 PM   #7
aziltz is offline aziltz  United States
diyAudio Member
 
Join Date: Jun 2010
Location: Williamsburg, VA
you want what I've described as the "splitter" in the document, http://www.coldcrafteffects.net/PCB_...uild%20Doc.pdf

I'm working on Wiring Diagrams and fleshing out the info in the document, but I might lose power this weekend.

An isolation transformer would allow you to disconnect the grounds of the two outputs. Some applications might cause excessive hum without it, but I haven't had a chance to test whether it can drive a small 1:1 transformer yet, though I suspect it will.
  Reply With Quote
Old 26th August 2011, 05:54 PM   #8
jtjy is offline jtjy  Singapore
diyAudio Member
 
Join Date: Jan 2010
Quote:
Originally Posted by aziltz View Post
you want what I've described as the "splitter" in the document, http://www.coldcrafteffects.net/PCB_...uild%20Doc.pdf

I'm working on Wiring Diagrams and fleshing out the info in the document, but I might lose power this weekend.

An isolation transformer would allow you to disconnect the grounds of the two outputs. Some applications might cause excessive hum without it, but I haven't had a chance to test whether it can drive a small 1:1 transformer yet, though I suspect it will.
alright. will wait for your updates. Will be getting from you when stock arrives.
  Reply With Quote
Old 26th August 2011, 06:00 PM   #9
aziltz is offline aziltz  United States
diyAudio Member
 
Join Date: Jun 2010
Location: Williamsburg, VA
stock is already here in hand. I'm just putting off shipping orders until monday because of the storm. I am definitely going to be losing power this weekend.
  Reply With Quote
Old 30th August 2011, 04:18 AM   #10
aziltz is offline aziltz  United States
diyAudio Member
 
Join Date: Jun 2010
Location: Williamsburg, VA
I lost power over the weekend. thankfully nothing else was lost. I'll be shipping out starting tuesday.
  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
Class A Buffer Op amp ttan98 Chip Amps 8 12th August 2011 06:50 PM
op-amp + op-amp buffer combinations eccdbb Chip Amps 2 22nd July 2011 04:13 AM
Preout / buffer op-amp yakideo Chip Amps 5 9th March 2011 08:33 AM
Op-amp Buffer johnferrier Solid State 30 28th October 2003 05:38 PM


New To Site? Need Help?

All times are GMT. The time now is 09:21 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