"Roy L. Fuchs" wrote in message
...
On Wed, 15 Feb 2006 17:46:25 GMT, "Anthony Fremont"
Gave us:

If the OP finds an LED with a lower voltage drop than the original,
then
it will most assuredly have more current flowing thru it with no
changes
to the rest of the circuitry.

The current fed to LEDs is typically controlled and limited for a
reason. There is no reason for you to be correct if said circuit is
one such regulated circuit.

If the current limiting is done with a resistor, as it often is, then
the resistor would be forced to drop more voltage. This means more
current thru the resistor and consequently more current thru the diode.

Also, single junction diodes such as that discussed here have
changed very little over the DECADES. The junction threshold voltage
hasn't changed much at all. Do you have any examples?

Then please tell me how an LED can now be blindingly bright with 20mA if
they aren't more efficient? They're a far cry from the things of
yesteryear. Examples abound, traffic lights, tiny flashlights etc....