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Erik Malund
11/30/15 07:09
Read: 500 times
Mt Airy, Nc
USA


 
#190590 - use a $0.20 micro ...
Responding to: Oliver Sedlacek's previous message
.. several from SILabs.


Powered from the relay power (through suitable power reduction) when coning out of reset a timer start and if it expires w/o power going away it will blow the fuse I mentioned in my previous post and do wahtever is required alarmwise. the 555 solution lack the alarm capability

List of 4 messages in thread
TopicAuthorDate
Fail safe solenoid switching      Raghunathan      09/16/15 02:47      
   I'm thinking about this and ...      Erik Malund      09/16/15 07:06      
   Relay and timer?      Oliver Sedlacek      11/27/15 04:43      
      use a $0.20 micro ...      Erik Malund      11/30/15 07:09      

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