Dears, I have been racking my brains to design a small analog circuit but with no success. I hope some genius will point me in the right direction.
The problem: I have (say) 12V DC power supply. I need a circuit sensing the output DC of the power supply and which will give a high output when Power supply is switched OFF and then ON within (say) 3 seconds. If the power supply is switched ON after more than 3 seconds of last OFF than I need a low output. Anyone can help?
The problem: I have (say) 12V DC power supply. I need a circuit sensing the output DC of the power supply and which will give a high output when Power supply is switched OFF and then ON within (say) 3 seconds. If the power supply is switched ON after more than 3 seconds of last OFF than I need a low output. Anyone can help?