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Whistle Flip Flop - laser trainer

Discussion in 'Electronic Basics' started by Alan Smithee, Nov 14, 2003.

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  1. Alan Smithee

    Alan Smithee Guest

    I posted this on electronics.design, but perhaps it's better off here
     
  2. cpemma

    cpemma Guest

    Maplin won't cut them in 2, it's 2 flipflops in one 14-pin package. QX07H is
    their equivalent HCF4013BEY

    I'd look at http://www.users.zetnet.co.uk/esr/catalogue.html if they carry
    all the parts you need, they're much cheaper than Maplin.

    = Battery -ve.
     
  3. Alan Smithee

    Alan Smithee Guest

    Thanks for your response...
    Sorry, is this the battery negative?
    Does it need to be cut in half? Curiously QX07H is listed in the index, but
    is not featured on the page it supposed to be on. So, could I use a
    4013BE - each 1/2 CD4013 in the circuit diagram is just one side of of the
    CMOS Flip flop?
     
  4. cpemma

    cpemma Guest

    And some fell on stony ground. Are you American?
    Not curious, careless. The Maplin paper catalogue has more errors than the
    Guardian. It's on the website, 49p, as a 4013B (19p @ ESR) Same thing, but
    could come from any maker (CD=Fairchild, HCF=Phillips IIRC)
    Yes. Best to ground all the unused inputs. Datasheet
    http://www.fairchildsemi.com/ds/CD/CD4013BC.pdf
     
  5. Alan Smithee

    Alan Smithee Guest

    Am I american? That's funny. I wasn't joking to begin with, but once I knew
    score I saw the funny side... and kept it in because so. So no, not
    american !!!!

    Many thanks for your help - just got to find a suitable laser now
     
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