From: "Frontline Electronics"
References: <0001HW.B9C26E7400A7161B165FEAC0@news.covad.net> <7tGLdeAS6fn9EwBv@jmwa.demon.co.uk> <email@example.com> <3DEDB1CD.EF3761C7@fanwap.com> <3DEEFDF5.DFFA3679@fanwap.com>
Subject: Re: Best way to power array of LEDs?
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Date: Sat, 07 Dec 2002 03:21:32 GMT
NNTP-Posting-Date: Sat, 07 Dec 2002 03:21:32 GMT
Organization: AT&T Worldnet
Yes, if you are not concerned about even illumination.
Most manufactures change design values for batches
of LED's not piece parts. Each manufactures batch is fairly
Now they have a new PINK color out.
Anyony played with it yet?
Remove NS to respond
Tong Narak wrote in message <3DEEFDF5.DFFA3679@fanwap.com>...
>Connect only one 3.01v still take ~150mA.
>Each LEDs has it own characteristic.
>So U can mix it in parallel as many company did it in headlight,
>brake light, etc.
>Tong Narak wrote:
>> LED look like simple but it is not simple.
>> In theory, you can't parallel LEDs.
>> But in practicle, I can parallel superbright LEDs.
>> Many car brake light, they parallel them too.
>> I mixed by parallel 3.4v 3.5v 3.6v 3.01v (forward voltage LEDs @20mA)
>> with a 3.6v regulator.
>> The forward current will vary automatic with the increment of
>> the input voltage.
>> the one 3.01v won't hog all current as someone said in this thread.
>> 3.01v take ~150mA
>> 3.4v take ~60mA
>> 3.5 take ~40mA
>> 3.6 take ~20mA
>> when remove the 3.01v LED, another LEDs still take the current
>> at the same value.
>> So. You can mix it in parallel. The lowest forward voltage LED
>> will not hog all current.