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Oscillator

Discussion in 'General Electronics Discussion' started by shahid123, Aug 15, 2017.

  1. shahid123

    shahid123

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    Aug 15, 2017
    2 legs or 4 legs crystal oscillator for depth measurement application???any other freq gen option??
     
  2. davenn

    davenn Moderator

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    Sep 5, 2009
    try telling us what you are doing --- as it stands, your question makes no sense
     
  3. LvW

    LvW

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    Apr 12, 2014
    In case you are interested in a detailed and comprehensive answer it would be wise to spent a bit more time for explaining your problem.
     
  4. BobK

    BobK

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    Jan 5, 2010
    "Four legs good, two legs bad,"

    or maybe:

    "Four legs good, two legs better."

    Bob
     
  5. hevans1944

    hevans1944 Hop - AC8NS

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    Jun 21, 2012
    Three legs is kinematically stable. Two legs and four legs are not. Find a crystal oscillator package with Power, Ground, and Output "legs" of suitable frequency for "depth measurement" (whatever you mean by that).

    We could provide more help if you would actually tell us what you want to DO, without any of your preconceived notions of HOW to do it.
     
  6. kellys_eye

    kellys_eye

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    Jun 25, 2010
    Do you want 'fixed' frequency or variable (programmable)?

    How accurate? How stable? What frequency? Overtone or fundamental? Sine or square? Logic level or analogue? Temperature controlled?

    We need to know........ (not really, but this is getting a bit pointless now).
     
  7. shahid123

    shahid123

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    Aug 15, 2017
    actually wht i am trying to do is to measure yhe depth of water, for which i need to generate a transmission signal of 200khz using oscillator.when i go out to buy it i found 2 types
    1)2 legs
    2)4 legs
    i am confused that which one will work better and staable>???
     
  8. kellys_eye

    kellys_eye

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    Jun 25, 2010
    Check the data sheet associate with them - I doubt you will need an accuracy so great as to require 'careful' choice of device - either one will work.
     
  9. BobK

    BobK

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    Jan 5, 2010
    Two lead (not leg) ones are not oscillators, they are crystals, which require additional circuitry to make an oscillator.

    Bob
     
    Harald Kapp likes this.
  10. hevans1944

    hevans1944 Hop - AC8NS

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    Jun 21, 2012
    Why don't you post links to the web pages where you found 200 kHz oscillators with (1) 2 legs and (2) 4 legs. A part number and name of manufacturer would also help us to recommend something for you.

    How do you propose to use a 200 kHz oscillator to determine water depth?
     
  11. kellys_eye

    kellys_eye

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    Jun 25, 2010
    Guessing he's after making an echo sounder - 200kHz being a common transducer frequency.
     
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