1744Views6Replies

Author Options:

Help with Alternating multiple LEDs adjustable Flash rate 9-12vdc supply Circuit Design.? Answered

I have seen many LED Flashers, but they seem to rely on capacitor discharge to light the LEDs. I want to drive around 40 to 60 LEDs and alternate between these LEDs and be able to adjust the Flash rate. One side on for 1 to 2 seconds then the other side on 1 to 2 seconds and alternate between each set of LEDs. The supply voltage will provide the LED Power. I just need to alternate each side on and off at an equal rate. Can anyone help with this design or know of site with this type of circuit?

6 Replies

user
frollard (author)2009-03-16

Police lights for a car eh? :D

http://ourworld.compuserve.com/homepages/Bill_Bowden/
TONNES of led flashers. Something will suit your needs. Just scale up one of the smaller flipflops with a mosfet to drive the larger load.

Select as Best AnswerUndo Best Answer

user
violentorchid (author)frollard2011-02-27

Too bad that site is dead. I was totally going to learn something from it.

Select as Best AnswerUndo Best Answer

user
frollard (author)violentorchid2011-02-27

search for bowdens hobby circuits. they moved to something like bowdenshobbycircuits.org or net or something. just google it.

Select as Best AnswerUndo Best Answer

user
violentorchid (author)frollard2011-03-12

If You can google it, why can't You post the new link? What if I stumble upon an evil plot and get killed by some bad guys because I was forced to use google and my own judgment? Could you really stand knowing that? JK XD

PS: It's http://www.bowdenshobbycircuits.info/

Select as Best AnswerUndo Best Answer

user
frollard (author)violentorchid2011-03-12

See, now you found it, and would have found it if you had searched the name. pages move around all the time (thats the point I was making)...

Select as Best AnswerUndo Best Answer

user
violentorchid (author)frollard2011-03-15

You're no fun at all. I guess I'll just have to put on my serious pants.
Why thank you, young sir. I shall search without fear as you have bolstered my spirits.

Select as Best AnswerUndo Best Answer