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???
08/06/03 17:10
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 		 #52223 - RE: Practical point of view
Responding to: ???'s previous message
From practical point of view you can also remove the zener diode and replace it with ordinary diode for reverse voltage protection because the zener diode is off all the time, if a voltage surge or ESD occured the photo diode of the optocoupler is long gone before the zener regulates the input surge.
Regards
Mahmood


List of 48 messages in thread
TopicAuthorDate
High Voltage to TTL conversion prob.            01/01/70 00:00      
   RE: High Voltage to TTL conversion prob.            01/01/70 00:00      
   RE: High Voltage to TTL conversion prob.            01/01/70 00:00      
   RE: High Voltage to TTL conversion prob.            01/01/70 00:00      
   RE: High Voltage to TTL conversion prob.            01/01/70 00:00      
   RE: High Voltage to TTL conversion prob.            01/01/70 00:00      
      RE: High Voltage to TTL conversion prob.            01/01/70 00:00      
   Inductive KICK problem ..            01/01/70 00:00      
      RE: Inductive KICK problem ..            01/01/70 00:00      
         RE: Inductive KICK problem ..            01/01/70 00:00      
            RE: Inductive KICK problem ..            01/01/70 00:00      
            RE: Inductive KICK problem ..            01/01/70 00:00      
               RE: Inductive KICK problem ..            01/01/70 00:00      
                  RE: Inductive KICK problem ..            01/01/70 00:00      
                  RE: Inductive KICK problem ..            01/01/70 00:00      
                     RE: Inductive KICK problem ..            01/01/70 00:00      
                  RE: Inductive KICK problem ..            01/01/70 00:00      
                     RE: Inductive KICK problem ..            01/01/70 00:00      
                     RE: Inductive KICK problem ..            01/01/70 00:00      
                        RE: Inductive KICK problem ..            01/01/70 00:00      
                        Resistance 100 ohm or 1000 ohm please ..            01/01/70 00:00      
                           RE: Resistance 100 ohm or 1000 ohm please ..            01/01/70 00:00      
                              RE: Resistance 100 ohm or 1000 ohm please ..            01/01/70 00:00      
                                 RE: Resistance 100 ohm or 1000 ohm please ..            01/01/70 00:00      
                              RE: Resistance ...........Kai            01/01/70 00:00      
                              RE: Resistance 100 ohm or 1000 ohm please ..            01/01/70 00:00      
                                 RE: Resistance 100 ohm or 1000 ohm please ..            01/01/70 00:00      
                                    RE: Resistance 100 ohm or 1000 ohm please ..            01/01/70 00:00      
                                       RE: Resistance 100 ohm or 1000 ohm pleas            01/01/70 00:00      
                                          RE: Resistance 100 ohm or 1000 ohm pleas            01/01/70 00:00      
                                             RE: Practical point of view            01/01/70 00:00      
                                                RE: Practical point of view            01/01/70 00:00      
                                                   ESD calculation            01/01/70 00:00      
                                                      RE: ESD calculation            01/01/70 00:00      
                                                         Sorry to Lee Cross!            01/01/70 00:00      
                                                         RE: Mike and Kai            01/01/70 00:00      
                                                            RE: Mike and Kai            01/01/70 00:00      
                                                               RE: Mike and Kai            01/01/70 00:00      
                                                                  RE: Mike and Kai            01/01/70 00:00      
                                                                     RE: Mike and Kai            01/01/70 00:00      
                                                                     RE: Mike and Kai            01/01/70 00:00      
                                                                        RE: Mike and Kai            01/01/70 00:00      
                                                                  RE: Mike and Kai            01/01/70 00:00      
                                                                     RE: Mike and Kai            01/01/70 00:00      
                                                                        RE: Mike and Kai            01/01/70 00:00      
   RE: High Voltage to TTL conversion prob.            01/01/70 00:00      
      RE: High Voltage to TTL conversion prob.            01/01/70 00:00      
         RE: High Voltage to TTL conversion prob.            01/01/70 00:00      

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