De-Lite grounding

Puffin · 5th July 2012, 05:49 AM

I have built a De-Lite using the IXYS 20N Dep fets. I have made a sort of star grd on the module where the Power grd, speaker and input grd are connected together. Should I be getting hum? It sounds like 50/60Hz.

Zen Mod · 5th July 2012, 07:32 AM

more info , please

pics

Puffin · 5th July 2012, 12:59 PM

More info about what?

All grds are tied together in one place.

underwurlde · 5th July 2012, 01:20 PM

Tried connecting the mains earth connection to your GND?

Puffin · 5th July 2012, 01:34 PM

I was just tryong to edit my post to say that at present the mains safety earth is not connected. I was under the impression that connencting mains earth to 0v might cause more problems?

underwurlde · 5th July 2012, 01:35 PM

try it...

Puffin · 5th July 2012, 01:37 PM

I will

cochleus · 5th July 2012, 02:22 PM

Ground lines coming from a star can pick up xformer buzz. Try moving the wires to a different location if you can.

Puffin · 5th July 2012, 02:24 PM

Quote:

Originally Posted by underwurlde

try it...

Tried that - no difference

Puffin · 5th July 2012, 02:35 PM

Quote:

Originally Posted by cochleus

Ground lines coming from a star can pick up xformer buzz. Try moving the wires to a different location if you can.

Space is tight. Where should they be moved to?

5th July 2012, 05:49 AM	#1
Puffin diyAudio Member Join Date: Feb 2006 Location: U.K	De-Lite grounding I have built a De-Lite using the IXYS 20N Dep fets. I have made a sort of star grd on the module where the Power grd, speaker and input grd are connected together. Should I be getting hum? It sounds like 50/60Hz.

5th July 2012, 07:32 AM	#2
Zen Mod diyAudio Member Join Date: Jan 2003 Location: ancient Batsch , behind Iron Curtain	more info , please pics __________________ my Papa is smarter than your Nelson ! tnx to clean thread ; Cook Book ; PSM LS Cook Book ; Baby Diyaudio FORUM ; Mighty ZM's Bloggg;I'm dumb

5th July 2012, 02:22 PM	#8
cochleus diyAudio Member Join Date: Oct 2009 Location: Ann Arbor Michigan	Ground lines coming from a star can pick up xformer buzz. Try moving the wires to a different location if you can. __________________ "My desire for knowledge is intermittent; but my desire to bathe my head in atmospheres unknown to my feet is perennial and constant". --- Thoreau

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5th July 2012, 12:59 PM	#3
Puffin diyAudio Member Join Date: Feb 2006 Location: U.K	More info about what? All grds are tied together in one place.

5th July 2012, 01:20 PM	#4
underwurlde diyAudio Member Join Date: Feb 2005 Location: S.England	Tried connecting the mains earth connection to your GND?

5th July 2012, 01:34 PM	#5
Puffin diyAudio Member Join Date: Feb 2006 Location: U.K	I was just tryong to edit my post to say that at present the mains safety earth is not connected. I was under the impression that connencting mains earth to 0v might cause more problems?

5th July 2012, 01:35 PM	#6
underwurlde diyAudio Member Join Date: Feb 2005 Location: S.England	try it...

5th July 2012, 01:37 PM	#7
Puffin diyAudio Member Join Date: Feb 2006 Location: U.K	I will

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