Fast way for L.E.D.'s
09-10-2006, 09:12 AM
#1
Fast way for L.E.D.'s
Im sure that someone has already come up with this somewhere, but I did not check. This dawned on me at 2 this morning when I was laying in the bed. I have tried to sauder L.E.D.'s before, but I suck after about 10 min. of it. This way all you have to do is put some duct tape or something over it to protect the leads. Tell me what you think, and if this already exists, let me know.
09-10-2006, 11:32 AM
#2
Member
Join Date: Jun 2006
Posts: 79
It works, but the reason I personally would rather solder the leds is so I know 100% that when they are sealed up in lets say a tail light housing, for example, they will never rattle or shake loose.
On the other hand if you had that set up in an accesable area it might not be so bad.
But I can solder pretty quickly so I dont think I would use that method either way.
On the other hand if you had that set up in an accesable area it might not be so bad.
But I can solder pretty quickly so I dont think I would use that method either way.
09-10-2006, 11:36 AM
#3
I am going to wrap it all in electrical tape and its going to be in the trunk. I think this way is better for the straight line, however something like Metal does (and a few others) with going all out with everything, it is better to do it another way. I just wanted something more for a straight line and to be a little different.
09-10-2006, 08:06 PM
#9
Im using this site for the resistor calcs...URL=http://metku.net/index.html?sect=view&n=1&path=mods/ledcalc/index_eng#[/URL] I am using blue LED's (5000MCD) and I think that gives me a 4.5V drop. Im trying to have 20 led's in parallel running off the 12V from the car. I put in 20milliamps for the calc. as well. It tells me to get a 22Ohm resistor with a power rating of 5 watts. The only problem is that I cant find that resistor at Radio Shack.
My question is: #1, Have I put in everything the way I should and #2 is there a way to get around not being able to use this resistor
My question is: #1, Have I put in everything the way I should and #2 is there a way to get around not being able to use this resistor
09-11-2006, 06:19 PM
#12
Originally Posted by BLK2BLU
Im using this site for the resistor calcs...URL=http://metku.net/index.html?sect=view&n=1&path=mods/ledcalc/index_eng#[/URL] I am using blue LED's (5000MCD) and I think that gives me a 4.5V drop. Im trying to have 20 led's in parallel running off the 12V from the car. I put in 20milliamps for the calc. as well. It tells me to get a 22Ohm resistor with a power rating of 5 watts. The only problem is that I cant find that resistor at Radio Shack.
My question is: #1, Have I put in everything the way I should and #2 is there a way to get around not being able to use this resistor
My question is: #1, Have I put in everything the way I should and #2 is there a way to get around not being able to use this resistor
09-11-2006, 06:57 PM
#13
What if I did it like this? (there is actually 22 LED's in all....I did not feel like drawing the rest)
If each LED makes it drop ~4V would this work? Actually I know it will work, but what about the milliamps on this
If each LED makes it drop ~4V would this work? Actually I know it will work, but what about the milliamps on this
09-12-2006, 06:38 PM
#18
If you dont plan on having the LEDs on that often, then the way metal sugested will work fine, particularly if you dont want to use resistors and dont want to/cant solder.
if you plan to have these on a lot then you may want to include some resistors in your design, it will provide minimal protection to the LEDs from transient overvoltage. the best way to do it would be to include a voltage regulator.
LEDs that get regular use, and do not use a regulator will last less than a year.
if you plan to have these on a lot then you may want to include some resistors in your design, it will provide minimal protection to the LEDs from transient overvoltage. the best way to do it would be to include a voltage regulator.
LEDs that get regular use, and do not use a regulator will last less than a year.
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