Any non-bright white 5mm (T1) LED's? (Low MCD)

[aphexii]

The lowest I seem to be able to find is around 500-700mcd, still fairly bright.

Has anyone run into any low mcd White 5mm LED's?

 

[nikongod]

why not just lower the current to like 1mA?

 

[Nick 214]

Quote:

Originally Posted by nikongod /img/forum/go_quote.gif why not just lower the current to like 1mA?

Exactly. You need a resistor to run LEDs anyway, so start with a variable one (pot) find the resistance that fits your needs, then install a permanent one at that value.

 

[aphexii]

Quote:

Originally Posted by nikongod /img/forum/go_quote.gif why not just lower the current to like 1mA?

Oooo, didn't think of that

Thanks!

 

[aphexii]

If you guys don't mind me asking (I'm kinda new at this), instead of using a variable pot to find a value, is there a formula I can use to calculate what resistance I would need to lower the current to that value?

Its for a MiniMAX if its any help;

This is the LED i'm considering

and This is the RLED called for in the BOM

 

[Bismar]

I've always found the easiest way to dim, an LED is to simply sand it lightly to give it a 'opaqueish' quality which effectively dulls the LED.

 

[Logistic]

R = (VS - VL) / I

VS = supply voltage
VL = LED voltage
I = LED current (you want to make this 1-2mA).

If 1mA is too bright, you can bump up the resistor value.

Quote:

Originally Posted by aphexii /img/forum/go_quote.gif If you guys don't mind me asking (I'm kinda new at this), instead of using a variable pot to find a value, is there a formula I can use to calculate what resistance I would need to lower the current to that value? Its for a MiniMAX if its any help; This is the LED i'm considering and This is the RLED called for in the BOM

 

[aphexii]

Excellent, THANKS!

 

[bhjazz]

Or plug your values into this!

Super Bright LEDs - LED Info