hi all,,I have made ckt using 8951 micro controller which is having 1.5min on delay. and 30min off delay. I got the output and planned to apply for my borewell pump. initially worked fine but after some on and off delay (say 3rd or 4th on delay ) it is not working as I had mentioned in program (1.5min on and 30min off ). what could be the problem????
block diagram:
micricontroller ----->uln 2003----->relay
block diagram:
micricontroller ----->uln 2003----->relay
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