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A small rant about the 555 :-)

Discussion in 'Electronic Design' started by pimpom, Nov 22, 2009.

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  1. pimpom

    pimpom Guest

    The people who designed the 555 timer should be given medals for
    coming up with a deceptively simple device that is still seeing
    so much use after nearly four decades. They also deserve to be
    tarred and feathered for the pin-out configuration. :)

    I don't know about you others, but I shudder every time I want to
    draw a schematic with the pins of the 555 in their relative
    positions as well as when I need to design a pcb for it.

    And with that, I'm going to bed. It's almost 3:30 am here. Good
    night.
     
  2. krw

    krw Guest

    Tell that to Slowman.
    Pinouts never bothered me. That's the layout guy's problem. ;-)
    After a few BGAs they don't sweat the small stuff either.
    You obviously know nothing about electronics. Just ask Slowman. ;-)
    Funny. I'm not tired at all.
     
  3. krw

    krw Guest

    I don't have any problems finding a job. What are you doing, Slowman?
    Still whining about your station in life, I see.
     
  4. krw

    krw Guest

    Except that no one "gives" anyone work. It's a contract like any
    other. You have something to offer that someone else needs. Slowman
    obviously doesn't fit the bill and projects his incompetence on
    others. That's the leftist weenie way.
    When you have nothing to offer, whining is all that you can do. A
    politician, somewhere, will cater to your whining, and trade you a
    biscuit for your soul.
     
  5. krw

    krw Guest

    Yet you project your inadequacies on others. ...and whine. Trypical
    leftist loser.
     
  6. krw

    krw Guest

    Regardless of the misplaced pronouns, he ain't preaching at me,
    dumbass. I'm not the unemployable one.
     
  7. pimpom

    pimpom Guest

    I didn't really mean that it's a "major" problem. What I meant
    was that, for a simple circuit serving a simple purpose, albeit a
    useful and versatile one, the illogical placement of pins makes
    things more difficult than they could be.

    For example, if pin 8 is Vcc, it would be better if ground was 5,
    and the control voltage terminal at 4. Then connecting the bypass
    cap from pin 4 would also be easier. Since the reset pin is often
    tied to Vcc, it could be allocated to pin 1. It wouldn't cause a
    problem with external triggering. I'd also interchange 2 and 3 -
    that will make a straight track from 2 to 6 in astable mode. So
    this is what I'd do:
    _________
    Reset 1-| |-8 Vcc
    | |
    Output 2-| |-7 Discharge
    | |
    Trigger 3-| |-6 Threshold
    | |
    Control 4-|_______|-5 Gnd

    Of course, all this is academic since the 555 has been around as
    it is for almost 40 years. But just visuallise drawing a
    schematic or designing a pcb with my mythical IC. I think you'll
    find that it's much easier.
     
  8. Rich Grise

    Rich Grise Guest

    USENET is open 24 hrs. a day. ;-)

    Cheers!
    Rich
     
  9. Jamie

    Jamie Guest

    10-4
     
  10. krw

    krw Guest

    Who in their right mind would move to that hell-hole?
     
  11. krw

    krw Guest

    If you "suffered" my restricted skill set you wouldn't be
    unemployable. Obviously. I am. You can't.
    You. Incessantly.
     
  12. krw

    krw Guest

    Look in a mirror, Slowman.
    No liar here, Slowman. You are the prototypical leftist loser.
     
  13. Jamie

    Jamie Guest

    I find it hard to believe that you had any involvement in PortLand, Me?
    or Maine in general. After all, you do know what they say? We're all
    related !

    Have a good
     
  14. Rich Grise

    Rich Grise Guest

    Potheads? ;-)

    Cheers!
    Rich
     
  15. krw

    krw Guest

    A. A good reason not to live in that hell hole you live in.
    B. More whining.
    See above for more whining. IOW, you're projecting your useless life
    on others, again.
     
  16. krw

    krw Guest

    Translated: His wife won't support the loser anywhere else.
     
  17. krw

    krw Guest

    I can't help it if you're blind, Slowman.
    I can't help it if you're blind, Slowman. Everyone else here sees,
    but you.
     
  18. krw

    krw Guest

    Nothing baseless about it, Slowman. All you have to do is take
    fingers to keyboard. Your incompetence and negativity gushes out.
    It's no wonder you're an unemployable leech. That's what you are.
     
  19. krw

    krw Guest

    That must be why I've been married for 38 years. IOW, another case of
    Billy Slowman projection.

    BTW, are you a cuckold too?
     
  20. krw

    krw Guest

    Wrong again, Slowman. You're unemployable because no one will hire
    *you*. It has nothing to do with me, though you're wrong here too.
    FPGAs are just a small, though quite interesting, part of my
    experience. IOW, add in your AGW religion and you're competing with
    DimBulb for the AlwaysWrong title.
    You always revert to the past and have excuses for your current
    failings. <shrug>
     
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