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???
01/27/06 09:02
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#108484 - more on relay ratings
Responding to: ???'s previous message
Farshid Jafari Harandi said:
You can switch every load by the contacts as far as you don't violate the contacts rating.So if you want to switch a mains light rated at 4 Amp I suggest you to go for a relay with 240V and 10 Amp rating.

Note that some relays specifically state different ratings for inductive & resistive loads.
When switching incandescent lamp loads, you also have to beware of the initial "inrush" current surge... (again, some relays will specifically state an incandescent lamp rating).



List of 27 messages in thread
TopicAuthorDate
Relay board diagram            01/01/70 00:00      
   Just search for, "Relay" !!            01/01/70 00:00      
      andy Neil            01/01/70 00:00      
         Relay ratings            01/01/70 00:00      
            ULN2803,ULN2003            01/01/70 00:00      
               more on relay ratings            01/01/70 00:00      
                  Yes of course            01/01/70 00:00      
               internal diodes            01/01/70 00:00      
                  ULN2003's doesn't easily burn            01/01/70 00:00      
                     Uce saturation voltage is rather high            01/01/70 00:00      
                        there is an alternative, search for it            01/01/70 00:00      
                        I agree            01/01/70 00:00      
                           That is bad design            01/01/70 00:00      
                              ULNs resist more...            01/01/70 00:00      
                                 I would never suggest 74HC buffers for d            01/01/70 00:00      
                                    Yes , you didn't            01/01/70 00:00      
                                       I would like to see where that is, pleas            01/01/70 00:00      
                                          correct link            01/01/70 00:00      
                              Bad Design?            01/01/70 00:00      
                                 naah            01/01/70 00:00      
                  Also depends on transistor speed            01/01/70 00:00      
                     valid issue, but not that, now another            01/01/70 00:00      
                        Indeed            01/01/70 00:00      
   Serial            01/01/70 00:00      
   How much current?            01/01/70 00:00      
   allegro            01/01/70 00:00      
      and infineon            01/01/70 00:00      

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