Email: Password: Remember Me | Create Account (Free)

Back to Subject List

Old thread has been locked -- no new posts accepted in this thread
???
03/13/06 14:25
Modified:
  03/13/06 14:33
Read: times


 		 #112061 - Yes, but...
Responding to: ???'s previous message
Erik said:
As a teenage, I made a bit of pocket money fixing radios and in my "innocence" I replaced a volume control with a linear potentiometer. Now I know whar decibels are :)

I know what you mean. And you were totally right, if you would apply to the lamp a DC-voltage. But the phase angle control applies pulses of varying lenghts and with the earlier posted correction curve you really get a quasi lear brightness control. Why else would the DMX people use it?

Kai

List of 46 messages in thread
TopicAuthorDate
Firing Angle / Phase Control Method            01/01/70 00:00      
   Calculus            01/01/70 00:00      
      Calculus            01/01/70 00:00      
         Numerical ?            01/01/70 00:00      
             Numerical ?            01/01/70 00:00      
         That's why we have Excel            01/01/70 00:00      
   Exact!            01/01/70 00:00      
   Table for firing angle phase control rel            01/01/70 00:00      
      Thanks Dear Prahlad            01/01/70 00:00      
         Mains Frequency.            01/01/70 00:00      
         Yes            01/01/70 00:00      
            Japan            01/01/70 00:00      
               Google says            01/01/70 00:00      
                  Amazing!            01/01/70 00:00      
   Another Question?            01/01/70 00:00      
      Look and see            01/01/70 00:00      
         Holding current            01/01/70 00:00      
      simple testing tool.            01/01/70 00:00      
         Genius methode!            01/01/70 00:00      
            Hi Kai            01/01/70 00:00      
               What is all on the borad?            01/01/70 00:00      
                  More!            01/01/70 00:00      
                     What is generating the EMI?            01/01/70 00:00      
                     Mains filter is a must!            01/01/70 00:00      
            Craig has fixed it!            01/01/70 00:00      
            Re: Genius Method.            01/01/70 00:00      
      flicker?            01/01/70 00:00      
         BTA40!            01/01/70 00:00      
         assuming that you are driving la            01/01/70 00:00      
            Good Guess            01/01/70 00:00      
               The whole concept is faulty!            01/01/70 00:00      
                  I am sorry for you,Erik            01/01/70 00:00      
                  Re: Percent Power <> Percent Light.            01/01/70 00:00      
                     yes, I am sure e.g. 1% power will genera            01/01/70 00:00      
                        Art of Speaking!            01/01/70 00:00      
                           that is your problem            01/01/70 00:00      
                     Black body radiation            01/01/70 00:00      
                        ratio of power delivery to the full powe            01/01/70 00:00      
                           absolutely, but the output is not power,            01/01/70 00:00      
                     Correction curve            01/01/70 00:00      
                  a rememberance            01/01/70 00:00      
                     Yes, but...            01/01/70 00:00      
                        exactly the point            01/01/70 00:00      
                           and            01/01/70 00:00      
   Another Question?            01/01/70 00:00      
      What micro do you use.            01/01/70 00:00      

Back to Subject List