Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Instruments and Amps Everything that makes music, Especially including instrument amps.

Guitar Buffer OpAmp Question...
Guitar Buffer OpAmp Question...
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 5th August 2004, 01:47 AM   #1
Upionics is offline Upionics  United States
diyAudio Member
Join Date: Aug 2004
Location: Santa Fe, NM
Question Guitar Buffer OpAmp Question...


I am building a Guitar Buffer for my pedal board and am basically using this schematic...


with some modifications published in Projects for Guitarists by Craig Anderton. Basically the modifications use dual batteries and have a more filtered output.

What do you recommend I use for the Op Amp? He claims you can use any 741. I was thinking of using a TL071 or TL072 or something like that since they are cheap and generally lower noise.

Any suggestions?

Or Any suggestions on general design?
  Reply With Quote
Old 5th August 2004, 06:35 PM   #2
leadbelly is online now leadbelly  Canada
diyAudio Member
leadbelly's Avatar
Join Date: Dec 2002
Location: Calgary, Alberta
Guitar Buffer OpAmp Question...
Yes, you should be fine. I believe the TL07x's work well in unity gain applications.

Personally, I wouldn't build it this way. Using 2 batteries is wasteful, since the guitar output is low enough that +/- 4.5 VDC power will do the job, which is how most commercial pedals are designed. I would look for an op amp that is happy at +/- 5VDC power and use 1 battery with a voltage divider circuit.
The whole problem with the world is that fools and fanatics are always so certain of themselves, and wiser people so full of doubts. Bertrand Russell
  Reply With Quote
Old 19th October 2004, 01:00 AM   #3
amz-fx is offline amz-fx  United States
diyAudio Member
Join Date: Sep 2004
Location: s. Louisiana
Default Re: Guitar Buffer OpAmp Question...

Originally posted by Upionics

Or Any suggestions on general design?
Check out my page at http://www.muzique.com/lab/buffers.htm

regards, Jack
  Reply With Quote


Guitar Buffer OpAmp Question...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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Opamp Buffer EchoWars Solid State 16 10th May 2007 04:49 AM
PMA's opamp/buffer pcb garbage Digital Source 1 2nd August 2004 03:09 PM
Opamp + buffer, how to bypass buffer at HF for unity gain? Christer Solid State 10 29th October 2003 07:50 AM
opamp with/without buffer....??? tbla Solid State 11 13th September 2003 04:18 PM

New To Site? Need Help?

All times are GMT. The time now is 11:43 PM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 16.67%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio