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Re: LEDs too bright
Dean Smith wrote:
> The LEDs are the style with built in resistor from Maplin - but
> they're too
> bright. Presumably I can simply add an external resistor to reduce the
> supply voltage to dim them down, but can I add a sinlge resistor to
> the 12V
> LED supply line - or Do I need a seperate resistor in-line with each
LED ?
Yes :-)
Size it according to where you place it (ie N resistors at R ohms, or 1
x R/N ohm resistor).
A single resistor should ensure each LED gets the same voltage, although
I'm not sure that would guarantee they'd all be the same brightness -
LEDs are known to be somewhat non-linear in their voltage/brightness
response, but I don't know how much that varies from device to device;
individual resistors would give you some room to fettle...
Jim
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