Shielded Wiring - diyAudio
Go Back   Home > Forums > Design & Build > Parts

Parts Where to get, and how to make the best bits. PCB's, caps, transformers, etc.

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 6th August 2004, 02:20 PM   #1
ble0t is offline ble0t  United States
diyAudio Member
 
ble0t's Avatar
 
Join Date: May 2004
Location: Milwaukee, WI
Default Shielded Wiring

Just wanted some input from the forum on this...

1) What type of shielded wire is the best to use? Is 22awg coax a good choice? Is so, where is a good place to purchase some?

2) When connecting the shield to ground, should it be connected to chassis ground? Or can it be run to a ground connection anywhere (i.e. on a board)?

Thanks in advance!
__________________
gravity always wins
  Reply With Quote
Old 6th August 2004, 04:12 PM   #2
diyAudio Member
 
ashok's Avatar
 
Join Date: Jun 2002
Location: 3RS
Default Where do you plan to use it?

The usual place where shielded wires is used ( in audio) is for carrying low level signals like the input signals. The most obvious one is from the input socket to the preamp board .
Shielded wire comes in several grades.
If you have no idea what to buy and find it hard to locate a supplier, you should just buy twin core shielded wire for microphone use . Use one core as the ground lead and one as the 'hot' lead. At the input end connect the ground lead to the earth on the input socket. At the amplifier end connect the ground lead and the shield to the board's input ground terminal.
The outer shield is not connected at the socket end.

Two companies that makes very good cable for professional audio use are Belden and Canare. Your supplier would be able to suggest which type to use.

Check out the following for technical info on cables.
http://bwcecom.belden.com/college/Techpprs/wcfsbetp.HTM

http://www.canare.com/otherpdfs/VS88551.pdf

Cheers.
__________________
AM
  Reply With Quote
Old 6th August 2004, 04:15 PM   #3
ble0t is offline ble0t  United States
diyAudio Member
 
ble0t's Avatar
 
Join Date: May 2004
Location: Milwaukee, WI
Thanks much! That was exactly what I was looking for
__________________
gravity always wins
  Reply With Quote
Old 11th August 2004, 01:46 AM   #4
Apex Jr is offline Apex Jr  United States
diyAudio Member
 
Join Date: Jun 2002
Location: Torrance, Calif
Default Shielded Wire

If it's not to late, missed this one...
I stock lot's of shielded wire:
Canare GS 6 sort of like Guitar cord size or RG 58/59 Coax
at .25ft have it in Red and Blue color.
Teflon shielded in 20 Awg and 22 Awg 1 cond .25ft .20ft
RG Coax in PVC and Teflon
multi-conductor PVC/Teflon shielded too...
Steve @ Apex Jr.
www.apexjr.com
  Reply With Quote
Old 11th August 2004, 05:34 AM   #5
diyAudio Member
 
Join Date: Aug 2004
Location: Santa Fe, NM
Depending on what you are doing. Belden and Canare have good choices for reasonably priced.

For internal wirings I like Belden RG-147. You can find it at mouser.com or smallbearelec.com.

It is a mini-Coax and for short connections it is great.

For like guitar/instrument or general cable applications, Canare GS-6 or GS-4 work great. Belden, Mogami are also great inexpensive choices.

You should probably hook it up to the signal ground. So if the signal ground is the chassis, then do the chassis. If it is on the board, use the board. Often the chassis ground and board ground is the same with the signal ground.
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Filament Wiring - Shielded vs. Twisted? k9swc Tubes / Valves 21 27th May 2009 07:12 PM
Shielded vs twisted pair in internal wiring zigzagflux Tubes / Valves 4 19th June 2007 10:59 PM
RG59 Coaxial shielded cable for input wiring? John Biles Solid State 77 8th December 2005 09:29 PM
I'm wiring my 4 channel 8 parallel LM4780 boards... check my wiring :) Audiophilenoob Chip Amps 9 16th August 2005 04:37 AM
shielded vs. non-shielded mytool4u Instruments and Amps 12 7th July 2005 10:12 PM


New To Site? Need Help?

All times are GMT. The time now is 12:03 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2