Most mondo very mucho correct about string current imbalance. Look at reference designs by TI and others that use multi-string controllers.
Brian -----Original Message----- From: [email protected] [mailto:[email protected]]On Behalf Of John Woodgate Sent: Friday, March 01, 2013 10:33 AM To: [email protected] Subject: Re: LED Chamber Lighting - drivers outside the chamber In message <[email protected]>, dated Fri, 1 Mar 2013, "ce-test, qualified testing bv - Gert Gremmen" <[email protected]> writes: >I know the topics about LED current sourcing and temp coefficient, but >as my power source is limited at 3 amps, which also is the full load >current of the LEDs, there is no risk of dead LEDS due to temp runaway. >There are 10 LEDS in series and 10 of these chains in parallel. I hope you are right but 'NTC' plus 'parallel' can spell 'current hogging'. Incidentally, it's not 'luminary' (a sort of up-market celebrity) but 'luminaire'. -- OOO - Own Opinions Only. See www.jmwa.demon.co.uk SHOCK HORROR! Dinosaur-like DNA found in chicken and turkey meals John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK - ---------------------------------------------------------------- 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 <[email protected]> All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. 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 <[email protected]> Mike Cantwell <[email protected]> For policy questions, send mail to: Jim Bacher: <[email protected]> David Heald: <[email protected]>
