what's a hum band?

jarthel · 18th March 2007, 12:57 PM

I was browsing sowter and have seen the word several times in the site.

thanks for the reply.

radtech · 18th March 2007, 03:38 PM

One that doesn't know the lyrics?

I'll be here all week.. try the veal.

pmillett · 18th March 2007, 04:44 PM

It's a copper band wound around the outside of the core and windings. It acts as a shorted turn to leakage flux, helping to contain it.

On a power transformer it can help lower radiated noise (like diode recovery spikes) from getting into other curcuits.

Pete

EC8010 · 18th March 2007, 08:32 PM

Mark Knopfler wore a luminous one tied over his brow for the "Money for nothing" video.

poynton · 18th March 2007, 08:38 PM

Quote:

Originally posted by pmillett
.......... it can help lower radiated noise ..............

Quote:

Originally posted by EC8010
Mark Knopfler wore a luminous one tied over his brow for the "Money for nothing" video.

It didn't work ........ noise was still radiated !!

EC8010 · 18th March 2007, 08:43 PM

Touche!

jarthel · 18th March 2007, 11:08 PM

Quote:

Originally posted by pmillett
It's a copper band wound around the outside of the core and windings. It acts as a shorted turn to leakage flux, helping to contain it.

On a power transformer it can help lower radiated noise (like diode recovery spikes) from getting into other curcuits.

Pete

thank you

18th March 2007, 12:57 PM	#1
jarthel diyAudio Member Join Date: Jan 2002 Location: somewhere in Australia	what's a hum band? I was browsing sowter and have seen the word several times in the site. thanks for the reply.

18th March 2007, 08:32 PM	#4
EC8010 diyAudio Moderator Join Date: Jan 2003 Location: Near London. UK	Mark Knopfler wore a luminous one tied over his brow for the "Money for nothing" video. __________________ The loudspeaker: The only commercial Hi-Fi item where a disproportionate part of the budget isn't spent on the box. And the one where it would make a difference...

18th March 2007, 08:43 PM	#6
EC8010 diyAudio Moderator Join Date: Jan 2003 Location: Near London. UK	Touche! __________________ The loudspeaker: The only commercial Hi-Fi item where a disproportionate part of the budget isn't spent on the box. And the one where it would make a difference...

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18th March 2007, 03:38 PM	#2
radtech diyAudio Member Join Date: Dec 2006	One that doesn't know the lyrics? I'll be here all week.. try the veal.

18th March 2007, 04:44 PM	#3
pmillett diyAudio Member Join Date: May 2005 Location: Dallas (but I am not a Texan!)	It's a copper band wound around the outside of the core and windings. It acts as a shorted turn to leakage flux, helping to contain it. On a power transformer it can help lower radiated noise (like diode recovery spikes) from getting into other curcuits. Pete

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