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Capacitor size to repel birds?

Discussion in 'General Electronics' started by [email protected], Aug 17, 2007.

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  1. I'm looking to build an electric bird repeller using HO scale railroad
    tracks. What size capacitor would be appropriate to give a sufficient
    shock to a bird to repel it, without hurting it?

    Thanks in advance.
  2. Robert Baer

    Robert Baer Guest

    First, design a trebucket (sp?) launcher and yse capacitors about 1/4
    to 1/2 inch insize; a rock would be better.
  3. no_one

    no_one Guest

    its actually trebuchet
  4. Try a cat instead.

    "That's the problem with science. You've got a bunch of empiricists trying
    to describe things of unimaginable wonder." -Calvin

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  5. Jasen Betts

    Jasen Betts Guest

    and this was approved for usenet?
  6. Karl Uppiano

    Karl Uppiano Guest

    There is nothing unique about a capacitor that makes it suited for shocking
    things. A capacitor merely stores energy. You can store energy in a battery,
    you can get the energy from the power utility, you can generate it with a

    If I were you, I would use an electric fence charger/energizer. Just connect
    the terminals to the track rails and plug it in. It is designed to inflict a
    painful but harmless electric shock. I have been "bitten" by electric fences
    on many occasions. It is not something I would do voluntarily.

    The voltage on these devices might be a bit high, causing the rails to arc.
    You might want to investigate how electric fences are typically installed,
    and use similar construction, with the same kind of wire and insulators.
  7. User-Agent: slrn/ (Debian)

    You could ask the authors to make your nntp client RFC compliant like it
    should already be. rfc3156 is like 6 years old!

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  8. Direct from rfc1847:

    A MIME agent that includes support for this framework will be able to
    recognize a security multipart body part and to identify its
    protected data and control information body parts. If the value of
    the protocol parameter is unrecognized the MIME agent will not be
    able to process the security multipart. However, a MIME agent may
    continue to process any other body parts that may be present.

    The last sentence is the meaningful one. Please pass the bug onto the slrn folks.

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