At 09:09 PM 2/14/02 -0300, you wrote:

>     I know it's on the datasheets, but I can't find it clear on the
>datasheets. I just want the general figures or points to where can I find
>the correct infos.

Usually digits that big have a number of LEDs in series for each segment.
You really have to look to the data sheets for the correct information such
as segment forward voltage (typical and max/min). It will vary with
manufacturer, (the number of LED dies may vary), color, and LED material.

For current, if you want 15mA average current, run the LEDs at 60mA and 25%
duty cycle. If you want some other current...

Look for forward current maximum, Vf(typ), Vf(max), Vf(min) and maximum peak
current (though the latter won't come into play at 25% duty cycle).

Best regards,

Spehro Pefhany --"it's the network..."            "The Journey is the reward"
speff@interlog.com             Info for manufacturers: http://www.trexon.com
Embedded software/hardware/analog  Info for designers:  http://www.speff.com
9/11 United we Stand

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