Email: Password: Remember Me | Create Account (Free)

Back to Subject List

Old thread has been locked -- no new posts accepted in this thread
???
05/28/04 13:12
Read: times


 		 #71395 - RE: Power outage logger
Responding to: ???'s previous message
1.Use an optocoupler to sense mains failure,
Why ?
Tie the recified fileterd +5 from the mains to a port pin, when that pin is low, the power is out and the uC is running on battery

Super caps may not power the RTC for long periods
There is no need, record the time the power failed and shut down.

List of 35 messages in thread
TopicAuthorDate
Power outage logger            01/01/70 00:00      
   RE: Power outage logger            01/01/70 00:00      
   RE: Power outage logger            01/01/70 00:00      
   RE: Power outage logger            01/01/70 00:00      
   RE: Power outage logger            01/01/70 00:00      
      RE: Power outage logger            01/01/70 00:00      
      RE: Power outage logger            01/01/70 00:00      
   RE: Power outage logger            01/01/70 00:00      
   RE: Power outage logger            01/01/70 00:00      
      RE: Power outage logger            01/01/70 00:00      
         RE: Power outage logger            01/01/70 00:00      
            RE: Power outage logger            01/01/70 00:00      
               RE: correction            01/01/70 00:00      
            RE: Relay            01/01/70 00:00      
               RE: Relay            01/01/70 00:00      
         RE: RTC Crystal            01/01/70 00:00      
      Battery operated devices            01/01/70 00:00      
         RE: Battery operated devices            01/01/70 00:00      
   RE: Power outage logger            01/01/70 00:00      
      RE: Power outage logger            01/01/70 00:00      
         RE: Power outage logger            01/01/70 00:00      
            RE: Power outage logger            01/01/70 00:00      
            RE: Power outage logger            01/01/70 00:00      
            RE: Power outage logger - Jez            01/01/70 00:00      
         RE: Power outage logger            01/01/70 00:00      
            RE: Power Backup            01/01/70 00:00      
   RE: LCD            01/01/70 00:00      
      Okay What I have done            01/01/70 00:00      
         RE: Okay What I have done            01/01/70 00:00      
            Cool Michael !            01/01/70 00:00      
               RE: Cool Michael !            01/01/70 00:00      
               RE: Cool Michael !            01/01/70 00:00      
            RE: Okay What I have done            01/01/70 00:00      
         Proceed...            01/01/70 00:00      
   RE: Power outage logger            01/01/70 00:00      

Back to Subject List