183Views6Replies

Author Options:

how to get an LED extremely bright? Answered

Just wondering how I can make a regular LED to become more bright, or if I have to change the light. The battery is 3v, and it says that the LED's max is 5v.

6 Replies

user
aeronut01 (author)2009-12-24

Feed the LED 5 volts through a voltage regulator (7805 for example).  There you go, max brightness.

Select as Best AnswerUndo Best Answer

user
frollard (author)2009-12-16

Check the specs of the leds you are using (or planing on using)

the more lumens (total brightness) (roughly mcd) the better, but that is only in the 'cone' of the viewing angle in degrees.  A wide angle led can have the same amount of light as a narrow beam one, but will look dimmer because its spreading the same amount of light wider.  Does your application need wide or narrow beam?

The led is designed to run between a minimum, optimal, and maximum voltage.  Do not run the led continuously at max voltage or it will have a shortened life span - rather, use more, or brighter leds to get more light.

Select as Best AnswerUndo Best Answer

user
grundisimo (author)2009-12-15
user
lemonie (author)2009-12-15

They'll only go so far before you "fry" them. Stick to the design-current/voltage.

L

Select as Best AnswerUndo Best Answer

user
steveastrouk (author)2009-12-15

Do whatever it takes to get the maximum current that the datasheet permits through the diode, but DON'T dump the series resistor.

Steve

Select as Best AnswerUndo Best Answer

user
Re-design (author)2009-12-15

Power it with 5volts then if you want max light.  You might even go to 5.5 and not burn it out but it will burn out eventually.

There super bright led's available if you need them.

Select as Best AnswerUndo Best Answer