THE GREATEST TURN SIGNAL MOD....EVER I have video. I made this.
#21
12-07-2006, 07:52 PM
RE: THE GREATEST TURN SIGNAL MOD....EVER I have video. I made this.
what laws of physics are you following???????
If you have a 1 Amp 2.4 V LED, it uses exactly 2.4 W of power by Power = voltage x current. So how did you come up with .850W???
If you have a 1 Amp 2.4 V LED, it uses exactly 2.4 W of power by Power = voltage x current. So how did you come up with .850W???
A resistor doesn't use power. Where are you getting this 3.5 number from????
LED calculator
Here's a calculator that I just found. It gives different answers than I had earlier, but I think that I may have included the resistor incorrectly in my previous post.
#22
12-07-2006, 07:55 PM
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#23
12-08-2006, 02:29 AM
RE: THE GREATEST TURN SIGNAL MOD....EVER I have video. I made this.
ORIGINAL: HurricaneForce
But isn't it using 12v?
what laws of physics are you following???????
If you have a 1 Amp 2.4 V LED, it uses exactly 2.4 W of power by Power = voltage x current. So how did you come up with .850W???
If you have a 1 Amp 2.4 V LED, it uses exactly 2.4 W of power by Power = voltage x current. So how did you come up with .850W???
A resistor doesn't use power. Where are you getting this 3.5 number from????
My understanding is that a resistor lowers current by dissipating some power as heat. That's why resistors are rated to certain wattages. A 20 watt resistor can dissipate 20 watts of power in the form of heat. Any more, and it gets to hot and burns up.
This is why resistors are rated to certain wattages. Because they have a max allowable current and max allowable voltage. As long as you do not exceed theses maximum values, the resistor will continue to offer the resistance that it is rated (e.g. 300 ohms). Once you exceed those, it will no longer give (in this example) 300 ohms of resistance (it may only be, say, 20 ohms). Exceed it for a longer period of time and the resistor will eventually fail.
LED calculator
Here's a calculator that I just found. It gives different answers than I had earlier, but I think that I may have included the resistor incorrectly in my previous post.
Here's a calculator that I just found. It gives different answers than I had earlier, but I think that I may have included the resistor incorrectly in my previous post.
Firstly, its a series resistor calculator. As mentioned earlier, you can't just put a, say, 2.4 V component in a 12V system. You have to create a resistor network. Putting one resistor in series isn't going to create that!!! Your resistor network needs to be a combination of resistors in both series and parallel.
Secondly, if you're going to use an LED, use a 12V. Then all you need is the proper resistor in parallel to account for the lower current draw of the LED.
If you don't have the electrical background, you should avoid stuff like this. If you truly want to get a better understanding of how this work, take an EE101 class. This stuff is covered within the first few weeks.
#24
12-08-2006, 06:55 PM
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RE: THE GREATEST TURN SIGNAL MOD....EVER I have video. I made this.
Secondly, if you're going to use an LED, use a 12V. Then all you need is the proper resistor in parallel to account for the lower current draw of the LED.
do you know where to get 12v 1 watt Leds? with a 130 degree dispersion? I don't. that would make life a whole lot easier. any help would be great.
#26
12-10-2006, 04:58 AM
RE: THE GREATEST TURN SIGNAL MOD....EVER I have video. I made this.
That sounds like a pretty cool mod, wirewalker. I can't really tell the difference between the two since the left side isn't flashing against the wall, but the right side def. looks pretty bright, esp. at night. Are you gonna leave the quick blinking or will you resolve that with some other resistors? I have mixed feelings on the subject as I like the slow blinking because it looks like you've taken your time to do a thorough job, but I'm wondering if the quick flashing might grab more attention from other drivers/riders on the road.
#27
12-10-2006, 03:05 PM
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RE: THE GREATEST TURN SIGNAL MOD....EVER I have video. I made this.
ORIGINAL: zerochickenstrips
That sounds like a pretty cool mod, wirewalker. I can't really tell the difference between the two since the left side isn't flashing against the wall, but the right side def. looks pretty bright, esp. at night. Are you gonna leave the quick blinking or will you resolve that with some other resistors? I have mixed feelings on the subject as I like the slow blinking because it looks like you've taken your time to do a thorough job, but I'm wondering if the quick flashing might grab more attention from other drivers/riders on the road.
That sounds like a pretty cool mod, wirewalker. I can't really tell the difference between the two since the left side isn't flashing against the wall, but the right side def. looks pretty bright, esp. at night. Are you gonna leave the quick blinking or will you resolve that with some other resistors? I have mixed feelings on the subject as I like the slow blinking because it looks like you've taken your time to do a thorough job, but I'm wondering if the quick flashing might grab more attention from other drivers/riders on the road.
#28
12-11-2006, 12:10 AM
#29
12-11-2006, 09:24 PM
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RE: THE GREATEST TURN SIGNAL MOD....EVER I have video. I made this.
ORIGINAL: superccs
So wait... how many LEDs are you using in Parallel/series to get it to work the way you want to at the brightness you want?
So wait... how many LEDs are you using in Parallel/series to get it to work the way you want to at the brightness you want?
#30
12-12-2006, 04:01 PM
