Making Blue LED car light strip- Part 2

[sharpasadullknife]

you could take this same idea and make a sign for your back window of your car like they do with neon lights

[Universalle]

дибіл

[01jordanfirst]

what type of resistors should i use for 5 white LEDs on a 9 volt battery?

[ghpk]

@01jordanfirst

use "ledcalc.com" to find a resistor value.

use 2 or 3 White L.E.D. if you are going to run if off 9V and voltage drop accross 5 would be more than input volts.

Best of luck.

[01jordanfirst]

@ghpk thanks!

[Dillon1791]

@ghpk i use 2 Blue-ish white LED on a 9volt with no resistor. they havnt blown yet and the batteries is new.

[01jordanfirst]

what type of resistors should i use for 5 white LEDs on a 9 volt battery?

[XxeLiTzxX]

what hml type of resistors are they. Like 40.....

[geo66663]

how much volt are the leds

[somwk]

what is the maximum number of leds a resistor should be connected to for decent operation? is it 3?

[ghpk]

@somwk yes you can use 3 L.E.D. and one resistor

you can connect more L.E.D. to the supply so they'll all be in lots of 3 and each 3 will have their own resistor.

I have approx 48 in one strip.

[DouglasBorchert]

@somwk this all depends on the resistor... for blue LED's that require 4 volts and have to have the right resistor for how many LED's you plan on placing on the resistor...

[shadowthelonefox]

wow...never thought of making your own lights. Excellent idea!!

[herolindiii]

where can i get resistors ???

and what kind of resistor are you using?

[ghpk]

resistors should be available at any shop which sells electornics parts, like radioshack and all.

use 150ohm 1/4 watt ones on a series of 3 L.E.D. they should be able to even survive 14 volts when the car is running and battery is powered extra for charging.

resistors were around 50cents for 50pcs. :-)

hope that helps.

[RDSvSRockfordFosgate]

what kind of resistor are you using????

[ghpk]

for every 3 L.E.D> in series, a 100 ohm resistor is used .

however using 150ohm would give proloned life of LED>

[RDSvSRockfordFosgate]

i'm using it for car battery...izit okay if i use 150Ohm Resistor????

[protegejustin1999]

where did you get them led lights

[ghpk]

Bulbs are purchased from local electronic parts shop, they are cheap, around 3$ for 100 L.E.D.'s

and then made it on own.

[ProJoe559]

damn u got good price i bought mine 25 for 3.$

[KScharba]

@protegejustin1999 I know it's been a long time since your post. Radioshack sells LEDs, but the cheapest is eBay, I bought 200 for about $10.

[rcreveiwers]

@protegejustin1999 if u live in the uk maplin if u live in america go to ure local elketronics/hobby shop