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???
08/05/09 18:39
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 		 #168194 - Thanks ALL.
Responding to: ???'s previous message
Hi Ka,
Thanks again....

My first query was Relay or Triac : With advice from all here, I was able to conclude that in this application, relay is better.

Second help that I requested was : "ways to reduce consumption still further" : So far I have gained a lot from all suggestions regarding my second query, and am able to google with more meaningful key words.

You are justified in saying that 400mA is not such high after all, but I am just keen on reducing it further. Possible or Not and if possible would it be substantial is something I am unable to answer on my own ;)

heatsink stands @ 32 deg Celsius (89.6 deg Fahrenheit), its about 2cms high, 2-3 mm thick, and top view looks like rectangle with 1 side missing. wraps around 7809 leaving front side open. But as I said earlier, i shall test by removing it.

I am really thankful to all of you sir.

List of 44 messages in thread
TopicAuthorDate
Mechnical Relay or Triac            01/01/70 00:00      
   Relays Or Triacs            01/01/70 00:00      
      Isolation            01/01/70 00:00      
      Relay or Triac            01/01/70 00:00      
         Pull-in vs hold current?            01/01/70 00:00      
         Relays Suggestions            01/01/70 00:00      
      Agree            01/01/70 00:00      
         optotriac            01/01/70 00:00      
            Relay Vs Triac            01/01/70 00:00      
               multimeter is reading 'hold' current?            01/01/70 00:00      
               a simple "kick and hold" circuit            01/01/70 00:00      
                  RE: a simple "kick and hold" circuit            01/01/70 00:00      
                     Thanks            01/01/70 00:00      
                     no            01/01/70 00:00      
                        I see!            01/01/70 00:00      
                     You are absolutely right...            01/01/70 00:00      
                  What are the values of R and C ?            01/01/70 00:00      
                     To be calculated!            01/01/70 00:00      
                     About...            01/01/70 00:00      
               Here are some calculations ..might be helpful            01/01/70 00:00      
                  RE: some calculations            01/01/70 00:00      
                     To Andy            01/01/70 00:00      
                        current measurement            01/01/70 00:00      
                           Schematic            01/01/70 00:00      
                              Re-Drawn Schematic            01/01/70 00:00      
                                 ASCII Art            01/01/70 00:00      
                     Relay supply            01/01/70 00:00      
                  To Kiran            01/01/70 00:00      
               latching relay            01/01/70 00:00      
                  Latching relays are cost effective            01/01/70 00:00      
                     One thing to consider            01/01/70 00:00      
                        latching relay : status updated on bootup            01/01/70 00:00      
                           Ay be a mix will be fine            01/01/70 00:00      
                           I just found a relay which needs lot lesser current            01/01/70 00:00      
                           That's too late!            01/01/70 00:00      
                              My Circuit            01/01/70 00:00      
                                 But didn't you mention...            01/01/70 00:00      
                                    hot... depends            01/01/70 00:00      
                                       Agreed!            01/01/70 00:00      
                                          Thanks ALL.            01/01/70 00:00      
                                       Low voltage drop            01/01/70 00:00      
                                          Good luck!            01/01/70 00:00      
                              random phase?            01/01/70 00:00      
                                 The same what the manufacturer meant...            01/01/70 00:00      

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