Help Keep Boards Alive. Support us by going ad free today. See here: https://subscriptions.boards.ie/.

https://www.boards.ie/group/1878-subscribers-forum

Private Group for paid up members of Boards.ie. Join the club.

Hi all, please see this major site announcement: https://www.boards.ie/discussion/2058427594/boards-ie-2026

What uses DC current and why?

08-04-2011 06:18PM

#1

mink_man

Closed Accounts Posts: 4,454 ✭✭✭

Join Date: May 2009

Posts: 4262

it's me again, what uses just DC current and why does it have to be DC current and how is the application operation achieved?

0

Comments

#2 10-04-2011 03:50PM

Antenna

Registered Users, Registered Users 2 Posts: 2,491 ✭✭✭

Join Date: June 2001

Posts: 2384

read this..
http://en.wikipedia.org/wiki/Direct_current

0
#3 11-04-2011 04:04PM

pieface_ie

Closed Accounts Posts: 301 ✭✭

Join Date: May 2008

Posts: 284

Magnetic door locks are 24V DC do they can be got in 230V AC.

When the 24V DC is applied a constant magnetic field is set up energizing the magnet.

0
#4 11-04-2011 06:54PM

Red Alert

Hosted Moderators Posts: 7,486 ✭✭✭

Join Date: January 2003

Posts: 7079

The LUAS does, and I'm pretty sure the DART trains do as well. It used to be a lot more common for big stuff like lifts that have to be speed-controlled until solid-state inverters made it possible to use AC.

0