More common 5.5mm power plug - 2.1mm or 2.5mm center?

Log in or register to post comments
Go To Last Post
8 posts / 0 new
Author
Message
kk6gm
kk6gm's picture
Level: Raving Lunatic
Joined: Fri. Sep 11, 2009
Posts: 3842 View posts
Location: Sacramento, CA
#1
Posted by kk6gm: Fri. Jul 29, 2011 - 01:03 AM
  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

Based on your experience, what is the more common 5.5mm power plug found on various wall warts - 2.1mm center or 2.5mm center? I'm designing a board that can take a wide range of voltage and I want to make it as generic as I can, with regard to warts the user may already have or warts we supply.

My sense is that 2.1mm is more common, but that's just one data point.

Tags:

Learning and Information, General Electronics
Top
valusoft
valusoft's picture
Level: Moderator
Joined: Sat. Jul 2, 2005
Posts: 15492 View posts
Location: Melbourne, Australia
Posted by valusoft: Fri. Jul 29, 2011 - 01:39 AM
  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

2.1 mm is my experience/vote.

Cheers,

Ross

Ross McKenzie ValuSoft Melbourne Australia

Top
Graynomad
Graynomad's picture
Level: Hangaround
Joined: Mon. Dec 22, 2008
Posts: 438 View posts
Location: nr Bundaberg, Australia
Posted by Graynomad: Fri. Jul 29, 2011 - 03:31 AM
  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

FWIW Arduino uses 2.1mm.

______
Rob

Scattered showers my arse -- Noah, 2348BC.
Rob Gray, old fart, nature photographer, embedded hardware/software designer, and serial motorhome builder, www.robgray.com

Top
frankvh
frankvh's picture
Level: Hangaround
Joined: Sat. Nov 3, 2001
Posts: 158 View posts
Location: Canada
Posted by frankvh: Fri. Jul 29, 2011 - 03:44 AM
  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

2.1 mm for sure. I had a product where I originally used the 2.5mm, but later switched it over to 2.1 mm for that same reason.

http://www.frankvh.com

Top
kk6gm
kk6gm's picture
Level: Raving Lunatic
Joined: Fri. Sep 11, 2009
Posts: 3842 View posts
Location: Sacramento, CA
Posted by kk6gm: Fri. Jul 29, 2011 - 01:59 PM
  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

OK, thanks all for the confirmation. 2.1mm it is.

Top
donblake
donblake's picture
Level: Posting Freak
Joined: Sat. Jan 3, 2004
Posts: 1554 View posts
Location: Binghamton, NY, USA
Posted by donblake: Fri. Jul 29, 2011 - 02:25 PM
  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 1

I always use 2.1mm but I keep several of these adapters on hand.

Don

Top
Tobias Claren
Tobias Claren's picture
Level: New Member
Joined: Wed. Apr 1, 2020
Posts: 1 View posts
Posted by Tobias Claren: Wed. Apr 1, 2020 - 02:49 PM
  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

Hello.

 

I read 2.5mm is compatible with 2.1mm (because of the metal spring inside). Is that correct? Is this always right?

Top
awneil
awneil's picture
Level: 10k+ Postman
Joined: Fri. Jul 1, 2005
Posts: 20411 View posts
Location: Basingstoke, Hampshire, UK
Posted by awneil: Wed. Apr 1, 2020 - 02:54 PM
  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 1

In my experience, it's always the one you don't have to hand!

 

Top Tips:

  1. How to properly post source code - see: https://www.avrfreaks.net/comment... - also how to properly include images/pictures
  2. "Garbage" characters on a serial terminal are (almost?) invariably due to wrong baud rate - see: https://learn.sparkfun.com/tutorials/serial-communication
  3. Wrong baud rate is usually due to not running at the speed you thought; check by blinking a LED to see if you get the speed you expected
  4. Difference between a crystal, and a crystal oscillator: https://www.avrfreaks.net/comment...
  5. When your question is resolved, mark the solution: https://www.avrfreaks.net/comment...
  6. Beginner's "Getting Started" tips: https://www.avrfreaks.net/comment...
Top