"Robin Banks" > skrev i meddelandet
...
> On Tue, 01 Feb 2005 08:00:02 -0500, Frank Scully
> > wrote:
>
>> The good news is that you only need ~ 1.2 volts to turn on an LED
>
> Depends on the LED. Some are 1.3v, some are 9v, some are 12v.
>
> All in all though, any 12v LED lamp replacement should work in any 12v
> auto,
> though I'd think the LED would look a little strange in them. (too
> "instant"
> on/off for my tastes.)
>
>
> ~~R.Banks

You can use 240 volts an d a diod 1N5001 as long as you don't exceed the
20-40 mA.
Use the right resistor for the LED and you can use any voltage. look at the
specs for the LED.
U = R · I

U / I = R 12 / 0,03A = 400 Ohm resistor for 6 volts = 200 Ohm resistor

P = U * I 12 * 0,03A = 0,36 Watt and for 6 volts = 0,18 Watt


Pepe