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ranjdar m asked What is this Electronic circuits called which has this job?
I want to switch a relay by a single pulse (5V amplitude and 5second long) for a while let say 10 minute or more. is that circuit called flip flop or timer delay, if you answer, please could you tell me a simple circuit last for that 10 min. with my regards
And got the following answer:
http://home.cogeco.ca/~rpaisley4/LM555.html#13 Here are some uses for the TIMER you need ..go to the link and slide down till recovery time delay circuit shows. There is a formula for finding Delay on Delay off and Cascading timers..The way you have explained it you need a delay off....holding high status for 10 minutes ..Now in the circuit a variable resister substituted for R1 is advisable if adjustments are to be made...Anyway the LM555 is cheap easy to find and exactly your solution...BTW a flip flop circuit changes by every input of a signal the output status from high to low..and viceversa....From the E
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