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Thread Closed: Drifted off-topic

???
12/13/09 19:22
Modified:
  12/13/09 19:23
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 		 #171600 - You are just wrong, dear Erik!
Responding to: ???'s previous message
Erik said:
The issue is not the LED but the resistor in series that totally 'kill' the clamping.


If the LED current is also 20mA (like the current through the relay) then the voltage across the relay is clamped to 24V during turning-off of relay. The switching transitor would see a voltage of 2 x 24V = 48V, which could eventually result in enough clamping.

So, Raghunathan, who is also in his business for some years, was quite right with the assumption, that the "non-polarized" LED could eventually provide enough free-wheeling.

Kai Klaas

List of 34 messages in thread
TopicAuthorDate
Suppression Diode for relay            01/01/70 00:00      
   non-polarized LED ??            01/01/70 00:00      
      Im surprised.... DIAC            01/01/70 00:00      
         triac + diac => quadrac            01/01/70 00:00      
   built in snubber diode            01/01/70 00:00      
      Powerful enough?            01/01/70 00:00      
         Clamp voltage            01/01/70 00:00      
            Clamp Voltage            01/01/70 00:00      
               Rise times...            01/01/70 00:00      
                  RIse Times...            01/01/70 00:00      
                  TOTALLY irrelevant            01/01/70 00:00      
                     You are just wrong, dear Erik!            01/01/70 00:00      
                        Simulation with TINA            01/01/70 00:00      
                           regardless ...            01/01/70 00:00      
                              So what?            01/01/70 00:00      
               The right description            01/01/70 00:00      
                  Clarity in descriptions            01/01/70 00:00      
                     To be fair            01/01/70 00:00      
                        Yes, to be fair...            01/01/70 00:00      
                           To me, it wasn't            01/01/70 00:00      
                              Very sad indeed            01/01/70 00:00      
                                 You said it yourself            01/01/70 00:00      
                                    And it should have ended there            01/01/70 00:00      
                                    Life is too short            01/01/70 00:00      
                                       Avoid the truth?            01/01/70 00:00      
                                          Avoid the truth?            01/01/70 00:00      
                                             That's exactly what I did!            01/01/70 00:00      
                                                clarification            01/01/70 00:00      
                                                   Still a well proven fact            01/01/70 00:00      
                                                      Not all...            01/01/70 00:00      
                                                         Solution found. Thread can close.            01/01/70 00:00      
                                                         Clarifying things should always be seen as good            01/01/70 00:00      
                                                            Clarifying things should always be seen as good            01/01/70 00:00      
                              "non-polarised" versus "bi-polar"...            01/01/70 00:00      

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