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  • Delay logic

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ID:	7355 Hello everyone,

    I have designed a power circuit in which i have used a circuit using IC555 that toggles the power states for on- off operation now i want to build a logic that gives some delay before the circuit cuts-off the supply, i have tried R-C logic by connecting it to discharge pin but it cancels the on-off logic,,, so can anyone help me with this??

  • #2
    Simple way what could help is to add a gate with two inputs - one input connected to the EN signal, the other to RC circuit.

    PS: If it helps, you may want to consider to use a dedicated chip for this, just google for something like "push button controller chip".

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