Why do I hear 60 hz sawtooth wave in my CRT television?

Doof4294967296 · Postby **Doof4294967296** » Sat Jun 27, 2015 2:31 pm

I wonder what is making this happen? Just asking, I noticed it a long time ago but I always just ignore it. Btw, do anyone know why does it release 60 hertz sawtooth wave?

Here's the audio file:
https://www.mediafire.com/listen/l28wta7 ... wtooth.wav

NOTICE!
- Before playing the audio file, please lower your volume. This track may cause damage to equipment and or hearing loss. You are playing this track at your own risk!! You have been warned

Postby **Franch88** » Sat Jun 27, 2015 9:03 pm

The frequency of 60 Hz is the one of the alternative current in Europe. It should be a ground loop, given by the use of a 3-pin plug, with the central ground pin. Certainly the device is also old, so it could be some circuit shield degrade, instead.
But now the question is: you're still using a CRT television?

Doof4294967296 · Postby **Doof4294967296** » Sun Jun 28, 2015 7:56 am

I have a new flat screen TV now. It would be a shame for me if I was stuck in the old devices. Well I got to admit, I'm still using floppy disk drives too for some circumstances. Well I was just eager to know what makes the 60 Hz ground loop in my old CRT television. By the way, it's actually 12 years old.

mm2car · Postby **mm2car** » Fri Jul 03, 2015 4:00 pm

For retro game consoles, a CRT television would be a smart investment.

Postby **Franch88** » Fri Jul 03, 2015 9:27 pm

For retro game consoles, a CRT television would be a smart investment.

Yeah, I agree this, it's the best way to enjoy them like they're meant to be.