What am I doing wrong ?

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  1. - 9th June 2006, 08:59 #7
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    Acetronics2
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    Talking Simple !!! ... do it simple !!!

    Hi, Malc

    Don't you think a simple triangle slow wave generator based upon a 555 or a twin AOP could perfectly do the job ???

    Note a simple bulb lamp could also do all the job itsef ... with a rectangular wave input.

    mmmmh, back to the original idea ... you'll have to seriously slow down the PWM change rate ...

    May be intended for some stop light for road/rail crossing, I presume ???

    Alain

    PS : and why not use a lookup table, just to reproduce exactly the truth ( exponential rise and fall of enlightment ) ???
    just a " particular shape " wave generator ...in fact.
    Last edited by Acetronics2; - 9th June 2006 at 09:05.
    ************************************************** ***********************
    Why insist on using 32 Bits when you're not even able to deal with the first 8 ones ??? ehhhhhh ...
    ************************************************** ***********************
    IF there is the word "Problem" in your question ...
    certainly the answer is " RTFM " or " RTFDataSheet " !!!
    *****************************************
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