Originally posted by fayad555
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Too tedious!
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Well these don't provide sufficient regulation. You can use them in current regulation mode though. Set the current to 20mA or so. But you need 1 reg for each series leg. (each leg will contain about 5 LEDs as - 5 x 2V = 10V)
Too tedious! -
Yeah...Originally posted by sajjt View PostNo idea, never been with a H7 too
but H7 is not a obsolate model, I hope its available with all reputed brands. Gonna melt the high beam
?
Still havent found it!
Why do u want to make it so complicated? Its a simple circuit..Originally posted by fayad555 View Post
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what about putting a voltage regulator IC (ic7812) to keep the voltage constant at 12v? so that leds wont blow off..Leave a comment:
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No idea, never been with a H7 tooOriginally posted by rahul9985 View Post
In that case i will continue with my search for a 100W H7. Thanks.
Do u know any specific brands which sell them?
but H7 is not a obsolate model, I hope its available with all reputed brands. Gonna melt the high beam?
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In that case i will continue with my search for a 100W H7. Thanks.
Do u know any specific brands which sell them?
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try searching for H4 to H7 convertor mods. THere r mods.Originally posted by rahul9985 View PostThanks..
U forgot second part of my post.
Can an H4 bulb be fit in a H7 socket? They both look alike. I was searching for an 100W H7 but couldnt find it. I reckon u use a 100W H4 from Osram. I can do jugaad for the wiring. But u need a hell of grinding and template job to make it.
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Thanks..
U forgot second part of my post.
Can an H4 bulb be fit in a H7 socket? They both look alike. I was searching for an 100W H7 but couldnt find it. I reckon u use a 100W H4 from Osram. I can do jugaad for the wiring.Leave a comment:
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Yeah, it depends on the LEDs.. cheap LEDs use 2V, 20mA commonly. And I have used 3V, 20mA for white & blue.. Basically a bit of a guswork since we do not get datasheet for these cheap LEDs...Leave a comment:
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@ Abhijeet
If we go for LED's with bigger base diameter its current consumption would be more right? So what should be the desired current while calculating the resistor value? Also i somewhere read that white & blue LED's have a drop of 4.5V.
These electronic components are susceptible to minor voltage & current fluctuations!
EDIT: Can an H4 bulb be fit in a H7 socket? They both look alike. I was searching for an 100W H7 but couldnt find it. I reckon u use a 100W H4 from Osram. I can do jugaad for the wiring.
Last edited by rahul9985; 01-10-2010, 11:27 AM.Leave a comment:
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Ok to clear the confusion, here is what to use -
5 LEDs in series - 200 Ohms (14V supply, 2V, 20ma)
4 LEDs in series - 300 Ohms (14V supply, 2V, 20ma)
3 LEDs in series - 400 Ohms (14V supply, 2V, 20ma)
2 LEDs in series - 500 Ohms (14V supply, 2V, 20ma)
1 LED only - 600 Ohms (14V supply, 2V, 20ma)
This is for RED LEDs only. For white or blue LEDs, use 3-3.5V instead of 2V
Lower number of LED in series is better because it will make the setup more robust to voltage fluctuations but more tedious as you need to solder more resistors.
Hope, everything is clear now!
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Dunno about yours, but mine works fine since the install.Originally posted by sajjt View PostI know and thatz why our brake lights r getting blown than our HL bulbs
Yeah, it is the base diameter. Please don't put values arbitarily. Use a LED Calculator and use the given values.Originally posted by fayad555 View PostLeave a comment:
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but mine doesnt glow that bright, may be beacuse i have put 270ohm...
we have 5mm 8mm leds etc, is that the diameter of the base of the led?Leave a comment:
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