Earth Disconnect Network

dasein · 21st February 2010, 06:25 PM

Hello!

I'm trying to safely get rid of Earth ground loops and I wanted to build this circuit:
Earthing (Grounding) Your Hi-Fi - Tricks and Techniques

I was wondering if I could use these parts from the ratshack (I don't have the parts on hand):

25A, 50V Full-Wave Bridge Rectifiers - RadioShack.com - 25A full wave rectifier (I know it's not the 35A on the ESP page is that ok?)
10 Ohm 10W 5% Wirewound Resistor (2-Pack) - RadioShack.com - 10 Ohm 10 watt resistor
Can't seem to find a 100 nf cap on their site...

Will this work?

Thanks!
--aaron

petemoore · 21st February 2010, 10:17 PM

Ratshack usually has the big FWR squares, I would not skimp on the diodes.
The resistors certainly are big, if you blow a 10w little-0hm resistor you're on your own then...
The 100Nf looks like something to help clean up HF's, it'll probably work without it or with a 220nf...until you can source the 100nf.

regiregi22 · 22nd February 2010, 08:51 PM

Thos components are perfect. Just look for any cheap 100nF cap.
This cap is meant to allow pass high frecuency current through it and make the enclosure act as a shield. Low freq current flows through the resistor.

I have the same circuit in my main amp and works as a flame

Sebastiaan · 23rd February 2010, 12:30 AM

Quote:

Originally Posted by regiregi22

Thos components are perfect. Just look for any cheap 100nF cap.
This cap is meant to allow pass high frecuency current through it and make the enclosure act as a shield. Low freq current flows through the resistor.

I have the same circuit in my main amp and works as a flame

I hope not literally

Ps. If you look in the Bryston schematics, you will see they use the same circuit. It does really help to improve THD big time on the meters...

With kind regards,
Bas

dasein · 23rd February 2010, 12:41 AM

Forgive my ignorance, but what is THD?

regiregi22 · 23rd February 2010, 07:31 AM

Total Harmonic Distortion

You can find it here:
What is Total Harmonic Distortion? - THD - Definition and Explanation of THD

davidcb · 09:02 AM

Quote:

Originally Posted by dasein

Hello!

I'm trying to safely get rid of Earth ground loops and I wanted to build this circuit:
Earthing (Grounding) Your Hi-Fi - Tricks and Techniques

Can't seem to find a 100 nf cap on their site...

Will this work?

Thanks!
--aaron

It would be listed as a 0.1 uf cap.

David.

Edit: http://www.radioshack.com/product/in...isc+capacitors

gootee · 23rd February 2010, 09:37 PM

Slightly OT:

Do yourself a favor and order the big paper catalogs from mouser.com and allied-elec.com, and probably also newark.com. They were free, the last time I checked. They are excellent references to have on hand (and also make finding and ordering components much easier). I usually ended up ordering mostly from mouser.com. Pricing is usually as good as it gets and the minimum order quantity is 1, with no minimum order.

21st February 2010, 06:25 PM	#1
dasein diyAudio Member Join Date: Apr 2009	Earth Disconnect Network Hello! I'm trying to safely get rid of Earth ground loops and I wanted to build this circuit: Earthing (Grounding) Your Hi-Fi - Tricks and Techniques I was wondering if I could use these parts from the ratshack (I don't have the parts on hand): 25A, 50V Full-Wave Bridge Rectifiers - RadioShack.com - 25A full wave rectifier (I know it's not the 35A on the ESP page is that ok?) 10 Ohm 10W 5% Wirewound Resistor (2-Pack) - RadioShack.com - 10 Ohm 10 watt resistor Can't seem to find a 100 nf cap on their site... Will this work? Thanks! --aaron

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21st February 2010, 10:17 PM	#2
petemoore diyAudio Member Join Date: Jan 2010	Ratshack usually has the big FWR squares, I would not skimp on the diodes. The resistors certainly are big, if you blow a 10w little-0hm resistor you're on your own then... The 100Nf looks like something to help clean up HF's, it'll probably work without it or with a 220nf...until you can source the 100nf.

22nd February 2010, 08:51 PM	#3
regiregi22 diyAudio Member Join Date: May 2009 Location: Madrid (Spain)	Thos components are perfect. Just look for any cheap 100nF cap. This cap is meant to allow pass high frecuency current through it and make the enclosure act as a shield. Low freq current flows through the resistor. I have the same circuit in my main amp and works as a flame

23rd February 2010, 12:41 AM	#5
dasein diyAudio Member Join Date: Apr 2009	Forgive my ignorance, but what is THD?

23rd February 2010, 07:31 AM	#6
regiregi22 diyAudio Member Join Date: May 2009 Location: Madrid (Spain)	Total Harmonic Distortion You can find it here: What is Total Harmonic Distortion? - THD - Definition and Explanation of THD

23rd February 2010, 09:37 PM	#8
gootee diyAudio Member Join Date: Nov 2006 Location: Indiana Blog Entries: 1	Slightly OT: Do yourself a favor and order the big paper catalogs from mouser.com and allied-elec.com, and probably also newark.com. They were free, the last time I checked. They are excellent references to have on hand (and also make finding and ordering components much easier). I usually ended up ordering mostly from mouser.com. Pricing is usually as good as it gets and the minimum order quantity is 1, with no minimum order.

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