Basic DC electricity question
On Fri, 16 Feb 2007 12:58:43 -0600, Mark Lloyd
wrote:
On Fri, 16 Feb 2007 02:30:11 +0000 (UTC),
(Larry) wrote:
In article ,
Chop Suey none wrote:
Larry inspired greatness with:
The LEDs being produced today for illumination do not require any resistor.
They are connected directly to the battery or other power source.
They may have a resistor packaged with it, but a LED is a *DIODE*, and
it requires a resistor.
Well, yes that is true. However they do not require an external
resistor in order to make a complete lighting circuit. Whatever resistance
is needed in built into the unit itself.
I considered that. "Built-in" is not equivalent to "nonexistent".
If you're going to be pedantic about it, "a resistor" isn't
equivilent to "resistance", or to "limited current", either.
|