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need help with an on delay timer...

tgranelli

Sep 29, 2010
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Sep 29, 2010
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HI!! my nephew decided that because i am an electrician i can help him with his electronics class in high school. i took a minor course in instrumentation when i was in school but that was years ago!! basically he needs to construct a circuit where the actual time of day is set (ie: 12:00) then a delay is set for a period of time where the device would come on. in addition to that he wants to add an off delay where after a set amount of time the device would turn off. so set the time, then have the device turn on 10 minutes later and turn off 10 minutes after that. i think im over explaining the theory and i know that there are already timers like this around i just need help understanding the workings and schematic of it. if anyone can help it would be greatly appreciated!!
thanks
 
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