Adaptors for the likes of mobile phones etc (needing 3 – 6V dc) I would imagine are designed to work from 12V – if plugged into 24v I expect the dissipation would be too great. That why there are after market 24V dc to 12V dc adaptors available:
http://www.maplin.co.uk/Module.aspx?ModuleNo=223432&doy=19m1&C=SO&U=strat15 ________________________________ From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of rk...@chrysler.com Sent: 19 January 2009 14:37 To: Scott Xe Cc: emc-p...@ieee.org Subject: Re: Cigarette socket in vehicles Hello Scott, In the case of 12V accessories to plug in normally they have a regulator installed to prevent the overvoltage. Thank you. Rob Kado EMC Engineer - Module Laboratory Operations Chrysler 800 Chrysler Drive CIMS 481-47-20 Auburn Hills, MI 48326 Desk: (248) 576-6915 Mobile: (248) 467-0639 Fax: (248) 576-7045 Scott Xe <scott...@gmail.com> Sent by: emc-p...@ieee.org 01/19/2009 08:45 AM To <emc-p...@ieee.org> cc Subject Cigarette socket in vehicles I have learnt that cigarette sockets supply two voltages: 12 or 24 volts. 12-volt sockets are widely used in light duly vehicles while 24-volt sockets in heavy duty vehicles. The sockets are identical in terms of configuration and dimensions. Is there any mechanism to prevent a 12-volt equipment from being plugged in a 24-volt socket? Thanks, Scott - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <emc-p...@ieee.org> All emc-pstc postings are archived and searchable on the web at http://www.ieeecommunities.org/emc-pstc Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ <http://www.ieee-pses.org/> Instructions: http://listserv.ieee.org/request/user-guide.html <http://listserv.ieee.org/request/user-guide.html> List rules: http://www.ieee-pses.org/listrules.html <http://www.ieee-pses.org/listrules.html> For help, send mail to the list administrators: Scott Douglas <emcp...@ptcnh.net <mailto:emcp...@ptcnh.net> > Mike Cantwell <mcantw...@ieee.org <mailto:mcantw...@ieee.org> > For policy questions, send mail to: Jim Bacher <j.bac...@ieee.org <mailto:j.bac...@ieee.org> > David Heald <dhe...@gmail.com <mailto:dhe...@gmail.com> > - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <emc-p...@ieee.org> All emc-pstc postings are archived and searchable on the web at http://www.ieeecommunities.org/emc-pstc Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <emcp...@ptcnh.net> Mike Cantwell <mcantw...@ieee.org> For policy questions, send mail to: Jim Bacher <j.bac...@ieee.org> David Heald <dhe...@gmail.com> ________________________________ This message (including any attachments) may contain confidential information intended for a specific individual and purpose. If you are not the intended recipient, delete this message. If you are not the intended recipient, disclosing, copying, distributing, or taking any action based on this message is strictly prohibited. - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <emc-p...@ieee.org> All emc-pstc postings are archived and searchable on the web at http://www.ieeecommunities.org/emc-pstc Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <emcp...@ptcnh.net> Mike Cantwell <mcantw...@ieee.org> For policy questions, send mail to: Jim Bacher <j.bac...@ieee.org> David Heald <dhe...@gmail.com>
