| Author |
Message |
bill chisholm (Billybandman)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, December 29, 2004 - 12:52 pm: | |
All this talk about LED's hasme wondering about the ACTUAL current draw vs incadescent bulbs. Say you replaced a 1156 with LED with 24 LED's, what would be the ACTUAL difference in draw? |
Henry R. Bergman, Jr. (Henryofcj)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, December 29, 2004 - 2:24 pm: | |
Probably a whole bunch less, since you are not waisting energy on heating the bulb, since you would have instead LED's. Do an experiment and find out. Sounds like fun.
Also this would mean that the voltage drop would be less also and the LEDs would work better since they would enjoy higher operating voltage and you could use stock/existing wiring toos. |
lesr44
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, December 29, 2004 - 3:44 pm: | |
with white 24 LED's the current would be .48 amp yes less than 1/2 an amp |
Gary Stadler (Boogiethecat)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, December 29, 2004 - 4:00 pm: | |
Actually you can't just multiply the number of LED's by their individual current for your answer... more likely than not they will be hooked in a combination of series and parallel for a 12 volt system. In series the current does not go up as you add LEDs.
My best guess if you were running twenty four 20ma white LED's on 12 volts and the designer did things right, you'd be running 8 "strings" of 3 LED's, so the current would be more like 8x.02 = .16 amps for the whole thing...
Cheers |
Merlin Moon (Mrmerlin)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Sunday, January 02, 2005 - 12:36 pm: | |
Use this little calculator to size the resistors needed in LED applications:
http://www.ledsupply.com/reca.html |
T. (Bluegrass)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Sunday, January 02, 2005 - 6:56 pm: | |
Thank you Merlin
Tony |
BrianMCI
Rating: N/A
Votes: 0 (Vote!) | | Posted on Monday, January 03, 2005 - 8:32 am: | |
Merlin you are a magician! I bookmarked that page.
Brian |