Can we improve this low distortion sine oscillator ? - Page 3 - diyAudio
Go Back   Home > Forums > Amplifiers > Solid State

Solid State Talk all about solid state amplification.

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 28th March 2009, 06:11 PM   #21
paba is offline paba  Canada
diyAudio Member
 
Join Date: Sep 2004
Location: Montreal
sometimes you need precise amplitude AND a clean sinewave...

<0.003% distortion and 0.1% amplitude stability, you will need to change some passives to get 1khz.

http://tinyurl.com/ce65re

cheers
paba
  Reply With Quote
Old 28th March 2009, 06:12 PM   #22
syn08 is offline syn08  Canada
Account disabled at member's request
 
Join Date: Aug 2005
Location: Toronto
Quote:
Originally posted by Dr.EM
Any opinion on this circuit:

http://home.att.net/~theremin1/Circu...scillator.html

I built it as a 500hz sine source (yeah, 1khz would have made more sense!) from bits I had around and it sounds and looks (on a scope) very pure. I used polystyrene capacitors. Used for testing max power output from an amp and checking for any obvious distortion or ringing.
The AGC loop looks stupid. Thanks God you you can't measure the spectral purity of this oscillator. Otherwise, I'm sure it sounds as good as any ppb distortion oscillator.
  Reply With Quote
Old 29th March 2009, 12:30 PM   #23
diyAudio Member
 
scott wurcer's Avatar
 
Join Date: Jan 2004
Location: cambridge ma
Quote:
Originally posted by paba
sometimes you need precise amplitude AND a clean sinewave...

<0.003% distortion and 0.1% amplitude stability, you will need to change some passives to get 1khz.

http://tinyurl.com/ce65re

cheers
paba
We did one along these lines in 1994 http://www.edn.com/archives/1994/111094/23di3.htm

Any resemblance to the Bateman article is purely coincidental
__________________
"Greetings from The Humungus! The Lord Humungus! The Warrior of the Wasteland! The Ayatollah of Rock and Rolla!" aka the Wizard of Wrestling.
  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
HP 202C LF Oscillator (tube sine wave generator) $20 pjanda1 Swap Meet 2 23rd July 2011 02:08 PM
Nice Heathkit IG-5218 Low Distortion Audio Sine/Square Generator dozer Swap Meet 2 12th January 2009 01:50 AM
sine wave with 1% residual distortion Bernhard Digital Source 13 10th April 2007 08:25 PM
How to improve rise/fall times from crystal oscillator? KasperM Digital Source 3 26th September 2002 04:22 PM


New To Site? Need Help?

All times are GMT. The time now is 12:38 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