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Trick Question

Discussion in 'Electronic Design' started by Frank Bemelman, Feb 10, 2004.

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  1. What *real* circuit can't be measured with an oscilloscope ?

    1st prize : a bag of 200 small pnp transistors.
    2nd prize : a bag of 100 small pnp transistors.
    3rd prize : a bag of 50 small pnp transistors.
     
  2. A racing circuit.
     
  3. Fred Bloggs

    Fred Bloggs Guest

    A surreal circuit.
     
  4. I read in sci.electronics.design that Frank Bemelman
    A motor-racing circuit?
     
  5. Boris Mohar

    Boris Mohar Guest

    One that has no power or signal applied to it. Don't ask me how I know ;)




    Regards,

    Boris Mohar

    Got Knock? - see:
    Viatrack Printed Circuit Designs http://www3.sympatico.ca/borism/

    void _-void-_ in the obvious place
     
  6. ;)

    ROFL! At least that's a valid answer. To the others: it's not
    a word game. Keep up the good work!
     
  7. Not even close! It's not a word game.
     
  8. Several circuit inside the same oscilloscope, e.g. trying to
    look at the vertical amplifier results in an feedback induced
    oscillation.
     
  9. Bert Hickman

    Bert Hickman Guest

    A magnetic or dielectric circuit?

    -- Bert --
    --
     
  10. BINGO! I thought it would take longer for someone to
    come up with this answer. Congratulations!
     
  11. The winners are:

    1st prize: Goran Larsson
    2nd prize: Boris Mohar
    3rd prize: Stefan Heinzmann

    The poodle prize goes to Fred.

    All are congratulated and the unlucky contestants
    are also thanked for their contribution.

    Winners can collect their prizes by emailing their
    address, watch the 'x' and 'invalid' in the reply address,
    these have to be removed. Prizes will be shipped ASAP,
    priority airmail and can be expected within 5-6 days.
    All information is kept highly confidential.
     
  12. Fred Bloggs

    Fred Bloggs Guest

    That may make sense to you foreign people but the "an" modifier of
    oscilloscope makes this a disappointing answer. To make this a coherent
    question in English you would ask: What real circuit can an oscilloscope
    not measure. This narrows it to a specific individual instrument as
    opposed to a class of instrumentation implied by your phraseology.
     
  13. Never said it was going to be easy, hahaha. BTW, all oscilloscopes
    suffer the same problem, hahaha. What a joke. Don't worry, I'm
    the greatest looser here, I have to start couting all those
    transistors, hahaha.
     
  14. In Frank Bemelman typed:
    Well, my scope service manual says to use a separate scope!

    And, how do you judge 2nd and 3rd place?
     
  15. Fred Bloggs

    Fred Bloggs Guest

    Right - because an oscilloscope can be used to measure a real circuit in
    another oscilloscope. The answer is a sur-real circuit- and this is not
    a play on words- a surreal circuit is one designed by an individual with
    only an impression of electronics design.
     
  16. I see what you mean. I'm glad the Jury decided to give you the
    poodle prize. You can collect your prize as per given instructions ;)

    Cheer up, you can't win 'm all - in particular with an incompetent
    jury ;)
     
  17. John Larkin

    John Larkin Guest


    I don't understand this. If I take a scope probe and hook it to, say,
    a vertical deflection plate of the same oscilloscope, doesn't the
    probe accurately reflect the true signal on the deflection plate at
    that instant?

    John
     
  18. Guy Macon

    Guy Macon Guest

    That doesn't seem to fit your problem as stated. A second
    oscilloscope is still "an oscilloscope." You might even be
    able to measure the vertical amplifier of one channel with
    the other channel with a single dual channel scope.
     
  19. Guy Macon

    Guy Macon Guest

    But you *did* say "It's not a word game." Twice.
     
  20. Hmm. But what if the calibration manual says, adjust Pxxx for yyy volt?
     
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