Forum Index > Projects > Larson Scanner kit and LED Menorah kit support
 No Resistors?
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By: Anonymous: mikeC () on Saturday, November 17 2007 @ 07:41 PM PST (Read 4729 times)  
Anonymous: mikeC

How come you didn't need to add resistors to the leds (like ladyada does in the pov kits)?

Thanks for awesome tutorials, btw...





       
   
By: Anonymous: mikeC () on Saturday, November 17 2007 @ 07:49 PM PST  
Anonymous: mikeC

Sorry, I just saw that you answered this question in the comments section. I'm still new to all of this (and as such didn't understand how pulsing saves the leds) but I got the jist of it. Feel free to point me to places on the web to learn more about how NOT to burn out my electronics Smile





       
   
By: Windell (offline) on Saturday, November 17 2007 @ 11:24 PM PST  
Windell

One of the things about the menorah that is different is that it's not easily reprogrammed once it's built-- and it really only does one thing, so it's pretty easy to enforce the super-low duty cycle, always < 10 percent.


Windell H. Oskay
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By: Anonymous: George () on Monday, November 26 2007 @ 08:40 PM PST  
Anonymous: George

I built one like this in the early 60s using miniature neon bulbs. You should have seen the fireworks when I switched it on with 120VAC. I did not know that the miniature neon bulbs did not have internal resistors to limit the current. I think that I still have the Vector board assembly.





       
   



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