[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: gEDA-user: buzzing board

Take a FFT of the sound.

use this software or another like it.

http://www.arachnoid.com/FFTExplorer/index.html

use a good sound card if you can afford it.

you could be hearing a beat frequency of 19th or 20th harmonic of the  
7.8 kHz oled, and the 150kHz switcher

7.8 * 19 = 148.2kHz   :-)

welcome to the land of harmonics :-)

Steve

smime.p7s



_______________________________________________
geda-user mailing list
geda-user@moria.seul.org
http://www.seul.org/cgi-bin/mailman/listinfo/geda-user