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Article #163

Re: Best way to power array of LEDs?

#163
From: ehsjr
Date: Mon, 04 Nov 2002 22:47
121 lines
6709 bytes

Winfield Hill wrote:

> 
>  I was taught to make efficient designs by insuring every part
>  has a purpose and carries its own weight.  With that in mind,
>  here's my entry, a slim 32-channel adjustable current source.

Where's the remote current sensing/ individual
current auto adjusting circuit for each LED?


> 
>  12V etc   4.7k               68 2W   GND
>  x-----/\/\--------x-- E   C --/\/\----x
>  |                 |     B             |
>  |     LM385-1.2   B     |    3.3k     |
>  +------|>]----- E   C --x---/\/\------x
>  |                 |                   |
>  |    /            B            LED    |
>  x--/\/\--/\/\-- E   C ----o----|>|----x
>  |  /              |                   |
>  |    /            B            LED    |
>  x--/\/\--/\/\-- E   C ----o----|>|----x
>  |  /              |                   |
>  |    /            B            LED    |
>  x--/\/\--/\/\-- E   C ----o----|>|----x
>  |  /              |                   |
>  |    /            B            LED    |
>  x--/\/\--/\/\-- E   C ----o----|>|----x
>  |  /              |                   |
>  |    /            B            LED    |
>  x--/\/\--/\/\-- E   C ----o----|>|----x
>  |  /              |                   |
>  |    /            B            LED    |
>  x--/\/\--/\/\-- E   C ----o----|>|----x
>  |  /              |                   |
>  |    /            B            LED    |
>  x--/\/\--/\/\-- E   C ----o----|>|----x
>  |  /              |                   |
>  |    /            B            LED    |
>  x--/\/\--/\/\-- E   C ----o----|>|----x
>  |  /              |                   |
>  |    /            B            LED    |
>  x--/\/\--/\/\-- E   C ----o----|>|----x
>  |  /              |                   |
>  |    /            B            LED    |
>  x--/\/\--/\/\-- E   C ----o----|>|----x
>  |  /              |                   |
>  |    /            B            LED    |
>  x--/\/\--/\/\-- E   C ----o----|>|----x
>  |  /              |                   |
>  |    /            B            LED    |
>  x--/\/\--/\/\-- E   C ----o----|>|----x
>  |  /              |                   |
>  |    /            B            LED    |
>  x--/\/\--/\/\-- E   C ----o----|>|----x
>  |  /              |                   |
>  |    /            B            LED    |
>  x--/\/\--/\/\-- E   C ----o----|>|----x
>  |  /              |                   |
>  |    /            B            LED    |
>  x--/\/\--/\/\-- E   C ----o----|>|----x
>  |  /              |                   |
>  |    /            B            LED    |
>  x--/\/\--/\/\-- E   C ----o----|>|----x
>  |  /              |                   |
>  |    /            B            LED    |
>  x--/\/\--/\/\-- E   C ----o----|>|----x
>  |  /              |                   |
>  |    /            B            LED    |
>  x--/\/\--/\/\-- E   C ----o----|>|----x
>  |  /              |                   |
>  |    /            B            LED    |
>  x--/\/\--/\/\-- E   C ----o----|>|----x
>  |  /              |                   |
>  |    /            B            LED    |
>  x--/\/\--/\/\-- E   C ----o----|>|----x
>  |  /              |                   |
>  |    /            B            LED    |
>  x--/\/\--/\/\-- E   C ----o----|>|----x
>  |  /              |                   |
>  |    /            B            LED    |
>  x--/\/\--/\/\-- E   C ----o----|>|----x
>  |  /              |                   |
>  |    /            B            LED    |
>  x--/\/\--/\/\-- E   C ----o----|>|----x
>  |  /              |                   |
>  |    /            B            LED    |
>  x--/\/\--/\/\-- E   C ----o----|>|----x
>  |  /              |                   |
>  |    /            B            LED    |
>  x--/\/\--/\/\-- E   C ----o----|>|----x
>  |  /              |                   |
>  |    /            B            LED    |
>  x--/\/\--/\/\-- E   C ----o----|>|----x
>  |  /              |                   |
>  |    /            B            LED    |
>  x--/\/\--/\/\-- E   C ----o----|>|----x
>  |  /              |                   |
>  |    /            B            LED    |
>  x--/\/\--/\/\-- E   C ----o----|>|----x
>  |  /              |                   |
>  |    /            B            LED    |
>  x--/\/\--/\/\-- E   C ----o----|>|----x
>  |  /              |                   |
>  |    /            B            LED    |
>  x--/\/\--/\/\-- E   C ----o----|>|----x
>  |  /              |                   |
>  |    /            B            LED    |
>  x--/\/\--/\/\-- E   C ----o----|>|----x
>  |  /              |                   |
>  |    /            B            LED    |
>  x--/\/\--/\/\-- E   C ----o----|>|----x
>  |  /              |                   |
>  |    /            B            LED    |
>  x--/\/\--/\/\-- E   C ----o----|>|----x
> 
>  Thanks,
>     - Win
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Subject: Re: Best way to power array of LEDs?
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