Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

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

What type of relay to use?
What type of relay to use?
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
Thread Tools Search this Thread
Old 16th April 2008, 08:41 PM   #1
speakerguy79 is offline speakerguy79  United States
diyAudio Member
Join Date: May 2006
Default What type of relay to use?

What type of relay should I use when switching line-level audio signals, and what type should I use when switching something like a headphone output signal? Thanks!
  Reply With Quote
Old 16th April 2008, 08:54 PM   #2
Jonathan Bright is offline Jonathan Bright  Australia
diyAudio Member
Join Date: Feb 2004
Location: Queensland Australia
Bob Cordell initiated a discussion on relays (for output/speaker connections) very recently (a week or so) so if you don't get much response here you might try that thread as it seems to be looking at most of the options and the relevant expert were involved at a fairly serious level.
"It was the Springtime of the year when aunt is calling to aunt like mastodons bellowing across primeval swamps." P.G. Wodehouse.
  Reply With Quote
Old 21st April 2008, 12:25 PM   #3
Mooly is offline Mooly  United Kingdom
diyAudio Moderator
Mooly's Avatar
Join Date: Sep 2007
What type of relay to use?
You want something that won't degrade over time (oxidisation of contacts), so go for a sealed relay type or possibly glass reed relays. All these OK for headphone levels as well. Have used reed types successfully in past but prefer solid state switching for small signals.
Regards Karl
  Reply With Quote
Old 21st April 2008, 04:03 PM   #4
cliffforrest is offline cliffforrest  United Kingdom
diyAudio Member
Join Date: Sep 2004
Location: South Coast, UK
What type of relay to use?
Default Sealed reed relays!

Perfect for low level signals. Do not corrode, have about 50mR contact resistance, quiet and quick and take little power to drive.

Also fine for NORMAL headphone switching, but not for low impedance stuff - they weld easily if arced.
  Reply With Quote
Old 21st April 2008, 11:52 PM   #5
Geek is offline Geek
diyAudio Member
Geek's Avatar
Join Date: Sep 2004

Look for the signal relays like the telephone company uses. They are low power and either irridium (sp?) or gold plated contacts.

Fujitsu makes some that are relatively inexpensive, small and burn peanuts for coil power. Can't think of the model # off the top of my head though.

  Reply With Quote


What type of relay to use?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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
What type of Relay for a power amp? Electro-mechanical? Brit01 Solid State 8 11th August 2008 03:46 PM
Re : BL type & GR type of transistor for Aleph-Ono Arion Pass Labs 4 29th January 2007 07:15 PM
Relay hugobors Parts 6 21st February 2006 11:20 AM
Looking for the best relay carlmart Solid State 15 19th August 2005 01:06 AM
Help with relay ppereira Solid State 14 21st June 2003 09:10 AM

New To Site? Need Help?

All times are GMT. The time now is 09:58 PM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 16.67%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio