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 19th August 2006, 04:23 PM   #1
jarthel is offline jarthel  Australia
diyAudio Member
 
Join Date: Jan 2002
Location: somewhere in Australia
Default relay voltage rating

I intend to buy a 10V relay. Can I use a varying DC supply of 9.5V to around 10.4V supply?

Thank you.
  Reply With Quote
Old 19th August 2006, 04:27 PM   #2
poobah is offline poobah  United States
diyAudio Member
 
poobah's Avatar
 
Join Date: Nov 2005
Yes... there is generally a little "give" in the coil specs. The absolute limits should be listed in the relay's data sheet though. You ARE talking about thew coil rating right?

  Reply With Quote
Old 19th August 2006, 05:13 PM   #3
jarthel is offline jarthel  Australia
diyAudio Member
 
Join Date: Jan 2002
Location: somewhere in Australia
Quote:
Originally posted by poobah
Yes... there is generally a little "give" in the coil specs. The absolute limits should be listed in the relay's data sheet though. You ARE talking about thew coil rating right?


yes I'm talking about the coil.

unfortunately, I can't see the voltage operating range in the datasheet. all I see is the 10V (nominal).

thank you.
  Reply With Quote
Old 19th August 2006, 05:21 PM   #4
poobah is offline poobah  United States
diyAudio Member
 
poobah's Avatar
 
Join Date: Nov 2005
A 10 Volt relay would probably "pick up" at 6 Volts and "drop out" at around 4 Volts. So your safe at 9 Volts, easy, on the low side. Your limiter on the high side is power dissipation in the coil. You're safe to assume a +/- 10% on coil voltage.

  Reply With Quote
Old 20th August 2006, 01:25 PM   #5
jarthel is offline jarthel  Australia
diyAudio Member
 
Join Date: Jan 2002
Location: somewhere in Australia
this is the relay I'm looking at: http://relays.tycoelectronics.com/datasheets/d2n.pdf

part no: V23105A5479A201

Thank you.
  Reply With Quote
Old 20th August 2006, 02:01 PM   #6
diyAudio Member
 
mrshow4u's Avatar
 
Join Date: Jul 2006
it's a 10V 32.5mA 550mW 182 Ohm coil 3A contacts It doesn't give pull in or hold current specs. I think 9V would be easy.
__________________
".........These go to eleven"
  Reply With Quote
Old 20th August 2006, 02:06 PM   #7
rpapps is offline rpapps  Antarctica
diyAudio Member
 
Join Date: Jul 2004
Location: nowhere of interest
Hi Jarthel
From my reading of the datasheet, it looks like its good for from 6.3 to 13.4 volts.
Cheers
Rob
  Reply With Quote
Old 20th August 2006, 02:21 PM   #8
AndrewT is offline AndrewT  Scotland
diyAudio Member
 
Join Date: Jul 2004
Location: Scottish Borders
Hi,
it looks like the low operate voltage using 182r and 32.5mA is about 6V. Well below your 9.5V.

The release voltage is only quoted as the minimum, in other word,s the voltage below which you must reduce to guarantee release.
The maximum release is what some relays will start to drop out at. You will need to measure this for your relay.
__________________
regards Andrew T.
  Reply With Quote
Old 21st August 2006, 01:31 AM   #9
jarthel is offline jarthel  Australia
diyAudio Member
 
Join Date: Jan 2002
Location: somewhere in Australia
Quote:
Originally posted by AndrewT
Hi,
it looks like the low operate voltage using 182r and 32.5mA is about 6V. Well below your 9.5V.
where did you see this?
  Reply With Quote
Old 21st August 2006, 01:34 AM   #10
jarthel is offline jarthel  Australia
diyAudio Member
 
Join Date: Jan 2002
Location: somewhere in Australia
also can I use this relay for 240VAC?

I saw in the datasheet something like

"maximum switching voltage: 250VAC"
"UL contact rating: 30V/1A or 100V/.3A"

Thanks again
  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
voltage rating for Ci? rfenergy Chip Amps 10 21st June 2008 09:24 AM
Using a cap above its voltage rating? h_a Parts 10 6th October 2007 03:46 PM
capacitors voltage rating morpheus82 Power Supplies 27 13th July 2006 07:01 PM
Aleph L Muting Relay Rating PaulyG Pass Labs 3 10th December 2002 12:55 AM


New To Site? Need Help?

All times are GMT. The time now is 04:22 AM.


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