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 9th October 2008, 10:34 AM   #1
ygg-it is offline ygg-it  Italy
diyAudio Member
Join Date: Feb 2008
Default In op-amp do not_symmetrical power supply cause distortion?

In an Opamp if I have + 15v in one rail and -14v in the other, this may cause distortion (even at low level) ?

(I'm using lm 317 and 337)
My projects (G.G. Italy)
  Reply With Quote
Old 9th October 2008, 10:54 AM   #2
diyAudio Member
Frank Berry's Avatar
Join Date: Sep 2003
Location: Midland, Michigan
I don't think so but I may be wrong.
Of course, you'll get non-symmetrical clipping.
I have used non-symmetrical bipolar supplies on some of my video distribution amplifier designs when I don't have quite enough voltage from the PSU.
In that case, I had +10 volts and - 5 volts on the rails.
  Reply With Quote
Old 9th October 2008, 11:57 AM   #3
ygg-it is offline ygg-it  Italy
diyAudio Member
Join Date: Feb 2008
Default re

So, a part of clipping, there is no sense to put a multitrimmer on one leg of the supply regulator to get the same output voltage equal to the other?
My projects (G.G. Italy)
  Reply With Quote
Old 9th October 2008, 12:11 PM   #4
AndrewT is offline AndrewT  Scotland
diyAudio Member
Join Date: Jul 2004
Location: Scottish Borders
easier to use a parallel resistor to adjust the output voltage.
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
Adcom 5400 Power Amp Distortion - Need Help partialresponse Solid State 4 29th August 2005 03:26 AM
power cord for HP 331a distortion analyzer dhenryp Parts 8 23rd June 2005 05:27 PM
PCB Power Traces -- distortion from vias? jackinnj Everything Else 2 20th November 2004 04:50 AM
Distortion on Power Amp that goes away when tapped? distracto Solid State 1 15th November 2004 09:08 AM
heater supply (xformer specs are 6.3V 2.5A) as supply for a power LED? jarthel Tubes / Valves 10 21st July 2003 01:30 PM

New To Site? Need Help?

All times are GMT. The time now is 06:45 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