On Thu, 15 Feb 2007 13:18:23 -0800, "Bob F"
wrote:


"Mark Lloyd" wrote in message

LEDs in parallel with each other? It's unlikely that all would light,
since the threshold voltages would be slightly different, and the one
that's lowest would prevent the others from lighting.

As someone said earlier, your LEDs probably are actually LED modules,
and come with built-in resistors. You have a separate resistor in
series with each LED.

He said 3V LEDs in one post - that implies the internal resister.


Not necessarily. As I said in another message, some LEDs have forward
voltages that high. That's the LEDs themselves.

Bob

--
Mark Lloyd
http://notstupid.laughingsquid.com

"Unlike biological evolution. 'intelligent design' is
not a genuine scientific theory and, therefore, has
no place in the curriculum of our nation's public
school classes." -- Ted Kennedy