The resistor is far more reliable than the modern DC switching electronics th ey put in consumer bulbs. My LED bulbs throughout the house fail about one evey month or so (ouit of 50 and not a single one has been due to the LED, but due to the voltage regulating electronics.
A series resistor is MUCH more reliable On Fri, Apr 2, 2021 at 1:08 PM Jim Walls via EV <[email protected]> wrote: > On 04/02/2021 09:57, Lee Hart via EV wrote: > > For fun, I just measured the current of my trailer's LED lights. At > > 12vdc: > > > > brake lights: 100ma each (has 8 LEDs in each one) > > tail lights: 80ma each (has 12 LEDs in each one) > > side marker lights: 30ma each (has 4 LEDs in each one) > > > > So they apparently put 4 LEDs in a series string, with a dropping > > resistor or circuit to take up the rest. > > > > Lee > > > > Yep, for 12 volt DC systems, either three or four LEDs in series is > pretty normal. Those numbers make far more sense than the original post > in this sub-thread that said 30mA for turn and brakes. > > -- > 73 > ------------------------------------- > Jim Walls - K6CCC > [email protected] > Ofc: 818-548-4804 > http://members.dslextreme.com/users/k6ccc/ > AMSAT Member 32537 - WSWSS Member 395 > > _______________________________________________ > Address messages to [email protected] > No other addresses in TO and CC fields > UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > ARCHIVE: http://www.evdl.org/archive/ > LIST INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20210402/f6a3713c/attachment.html> _______________________________________________ Address messages to [email protected] No other addresses in TO and CC fields UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub ARCHIVE: http://www.evdl.org/archive/ LIST INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org
