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Thread: Monostable and A stable coursework help

  1. #1
    Stuart92 Newbie
    Join Date
    Mar 2009
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    1

    Monostable and A stable coursework help

    Hi, im looking to add both a monostable and an A stable into a circuit to make an LED flash on and off and then keep the LED on longer when an input is triggered but ive been told many different things.

    What i need to know is do i:
    Run the output of the monostable into the A stable input, then use the A stable output to power the LED.

    Run the output of the monostable to the LED and make the A stable seperate to the rest of the circuit, wiring the output of that to the LED also. (2 sub-systems running to same LED)

    Use the output of the monostable as the A stable -ve rail and then use the output of the A stable to power LED.

    Any help will be greatly appreciated!


  2. #2
    colin55 Newbie
    Join Date
    Feb 2009
    Location
    Melbourne Australia
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    1,457

    A-stable means "not stable" or running all the time.
    Mono stable means that you have to pulse it to get it started (and it will then produce a pule) and then it does nothing until you pulse it again.
    Now go over your thinking and write a new description of what you intend to do.

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