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CRO probe

Discussion in 'Hobby Electronics' started by Yaputya, Aug 1, 2012.

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  1. Yaputya

    Yaputya Guest

    Anyone tried to make a x10 CRO probe?

    I've got an old Silicon Chip article (1989?) which gives some basic info, but the
    biggest problems involve the physical construction. My first attempt worked fine
    until I made the mistake of putting a drop of superglue on the trimcap - the goo
    must have seeped into the trimcap and changed the capacity, stuffing up
    the impedance match.

    Anyone got an easy-to-build design using readily available bits?

    Yeah, I know that new x10 CRO probes are cheap to buy, but the skill of making one
    yourself is what the hobby of electronics is all about, isn't it?
     
  2. Phil Allison

    Phil Allison Guest

    "Yaputya"
    ** This article ?

    http://www.dfad.com.au/links/THE SECRET WORLD OF PROBES OCt09.pdf

    Published in October 2009.



    .... Phil
     
  3. Yaputya

    Yaputya Guest

    A very good article, thanks for that! I recommend it to everyone who uses an oscilloscope.
    I still haven't found an easy way to make a basic x10 probe.
    I've only got a 60MHz CRO, so the the probe doesn't need to be DC to daylight.
    It isn't easy to shield the probe, include external trimcap adjustment and insulate the whole thing in
    a reasonably compact package. Perhaps it is too hard a task to build one from scratch.
     
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