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events couter switch - disign and help

Discussion in 'General Electronics Discussion' started by AC2T, Feb 9, 2011.

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  1. AC2T

    AC2T

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    Feb 9, 2011
    I am looking for the for the following circuit and must be built out of redily available ( discreet ) components

    events 1 :

    1. input : 5 x to earth pulses from relay to counter
    2.Counter must count the 5 pulses in 10 seconds
    3.If 5 pulses are received in 10 seconds a relay must close for 2 seconds and then reset
    4.should there not be 5 pulses in 10 seconds , the timer must reset and wait for the next set of pulses
    Event 2:

    1.recieve a positive puls from RTS on comport of computer
    2.detect puls and activate a relay for timespan that rts is active .
    I know it is possible to do it with a PIC but I do not have the experience

    Thank you for the assistance .....
     
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