Re: [DML] LED lights

[Martin Gutkowski <martin@xxxxxxxxxxxxxx>]

There's a device called a rectifier which allows the polarity to be 
reversed - it's made from 4 regular diodes. Cheaper LED bulbs don't have 
this and are polarity-sensitive.

LED stands for Light Emitting Diode. That's why they act like diodes, 
because they are diodes. Diodes typically drop 0.7v. However, you can 
get LED's that are rated at 12v (or 3 or 4)  because they are made from 
very small arrays of diodes. Our robot uses 40 super-bright  24v LED's

Martin

doctorDHD@xxxxxxx wrote:

>Can anyone  explain why connecting an LED light in reverse would do anything 
>other than not  light up the lamp?
> 
>In my  experience with plain LEDs they act as a Diode, in that they conduct 
>only in one  direction.  I have hooked up many an LED win reverse without ANY  
>problem.  As a matter of fact, they make dual LEDs with each one connected  
>opposite the other so you can detect which way the current is  flowing.
> 
>Is there  something else in an automotive LED replacement other than LED(s) 
>and a  resistor?
>
>Dave & 6530
>
>
>  
>





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