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???
08/18/05 13:13
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 		 #99650 - got curious and googled
Responding to: ???'s previous message
Line was crisp so persistence of the yellow phosphor must not be a problem.
http://members.misty.com/don/ledfaq.html#pt

anyhow my suggestion of using a tricolor LED as the source of white light was not persistence related, but related to the driver circuit.

List of 45 messages in thread
TopicAuthorDate
Tachometer and engine timing tool            01/01/70 00:00      
   Engine analyser            01/01/70 00:00      
      RE : Engine analyser            01/01/70 00:00      
         Engine analyser            01/01/70 00:00      
            Xenon Flash Lights            01/01/70 00:00      
               Xenon flash lights            01/01/70 00:00      
                  Calculating RPM            01/01/70 00:00      
                     RE: Calculating RPM            01/01/70 00:00      
                  flash charge circuit            01/01/70 00:00      
   Look at this then            01/01/70 00:00      
      I like it...            01/01/70 00:00      
   Xenon            01/01/70 00:00      
      Delay time < 10us            01/01/70 00:00      
   Led Instead Xenon            01/01/70 00:00      
      Interesting idea, were I to make sutch a            01/01/70 00:00      
         White is better for finding the TDC mark            01/01/70 00:00      
            If white light is required and what I ha            01/01/70 00:00      
               Good link            01/01/70 00:00      
      Nice !!            01/01/70 00:00      
         I do not work with white LEDs but with r            01/01/70 00:00      
            White LED            01/01/70 00:00      
               got curious and googled            01/01/70 00:00      
               got curious and googled            01/01/70 00:00      
               Hmm            01/01/70 00:00      
                  Sure it's not, but            01/01/70 00:00      
                     New prototype circuit            01/01/70 00:00      
                        I would recommend a constant current cir            01/01/70 00:00      
                           Current regualtor            01/01/70 00:00      
                              C2 may blow your LED, what is it there f            01/01/70 00:00      
                              Led ON time            01/01/70 00:00      
                                 6000 RPM            01/01/70 00:00      
                                    6000RPM            01/01/70 00:00      
                                       Can't comment on that now            01/01/70 00:00      
                  saw an article and while this probably            01/01/70 00:00      
                     Thanks            01/01/70 00:00      
                        timing light            01/01/70 00:00      
                           unanswered questions            01/01/70 00:00      
                  White LED v Xenon tube            01/01/70 00:00      
                     'difficult' to drive            01/01/70 00:00      
                        Big LEDs            01/01/70 00:00      
                           So Thats it !            01/01/70 00:00      
                              Who has said ir has to be just one, can            01/01/70 00:00      
                                 C is for stability ?            01/01/70 00:00      
                     I have no idea, but I have seen I do not            01/01/70 00:00      
                        White LED 'drivers'            01/01/70 00:00      

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