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Author Topic: Audio Oscillator
Steve Kraus
Film God

Posts: 3992
From: Chicago, IL, USA
Registered: May 2000


 - posted 05-24-2003 06:23 PM      Profile for Steve Kraus     Send New Private Message       Edit/Delete Post 
Can someone point me to (or display here) a schematic for a simple, adjustable audio oscillator? What I want is one where I can do a frequency sweep. I built a very simple one with a 555 chip, a couple of caps and resistors and pots but I'm not happy with the non sinusoidal output (I added an output cap to smooth it but still). The simpler the better.

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Jon Bartow
Master Film Handler

Posts: 287
From: Massachusetts
Registered: Nov 1999


 - posted 05-24-2003 07:50 PM      Profile for Jon Bartow   Email Jon Bartow   Send New Private Message       Edit/Delete Post 
http://sound.westhost.com/project22.htm

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Gordon McLeod
Film God

Posts: 9393
From: Toronto Ontario Canada
Registered: Jun 99


 - posted 05-25-2003 10:31 AM      Profile for Gordon McLeod   Email Gordon McLeod   Send New Private Message       Edit/Delete Post 
The best oscillator I have used is the Loftec (now sold by goldline) it has a constant amplitude output a db meter and frequency counter. Also it can used to calculate impedance as well
to build something similar isn't worth the time considering its low cost

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Jean-Michel Grin
Expert Film Handler

Posts: 222
From: Geneva & Lausanne, Switzerland
Registered: Jul 2002


 - posted 05-26-2003 12:23 PM      Profile for Jean-Michel Grin   Author's Homepage   Email Jean-Michel Grin   Send New Private Message       Edit/Delete Post 
For me the best hand-held audio oscillator is made by Neutrik , Minirator MR1
You find here an affordable audio generator:
-Pink noise
-White noise
-Audio sine or square from 20 Hz to 20 kHz
-Polarity test
-Auto sweep (timing adjustable)
-Balanced XLR and unbalanced phono output

Check the following link:
http://www.nt-instruments.com/X0-ASP-pLngCateId_217-pIntLevel_4-X1-default.htm

For me this is a great tool; every tech should have one [Smile]

Bye,

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