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Name this component!

Discussion in 'General Electronics Chat' started by HiTech, Jul 18, 2006.

  1. Nigel Goodwin

    Nigel Goodwin Super Moderator Most Helpful Member

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    When I was at grammer school during a physics lesson, the teacher produced a nice locked wooden box, when he unlocked it it was thickly lined with lead inside, and it had to be kept locked away for safety reasons as it contained a radium sample.

    We checked it with a geiger counter, then we checked all the luminous wrist watches worn by the various class members, every single one was many times more radioactive than the highly secured sample of radium!.

    The mention of Lancaster bombers reminded me!, the poor people who painted the dials in the aircraft with luminous paint mostly died horribly of cancer!.
     
  2. zevon8

    zevon8 New Member

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    How about a X-Ray dosimeter sensor? Or just a mosfet radiation sensor with a built in background source?

    ( edit ...re Nigel's post above... and so did all those poor people who did the watch dials )
     
  3. G8RPI

    G8RPI New Member

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    Hi Tech is correct!
    It's the ionisation detector module from a smoke detector. No chamber as such on this one, the current flows between the souce foil (connected to the gate of the mosfet) and thr wire loop in front of it.
    All relevant safety precautions were taken with this item. The weak Gamma from Am241 is not much of a problem, but Am241 is considered highly radiotoxic as it is strong Alpha emitter and is retained in the body if absorbed.
    Note that in the USA it is a federal offence to tamper with the source in a smoke detector, thechnically it's even an offene to use an intact detector as a test source as this is not it's intended use. This one is modern and fairly week at <15KBq or 0.4 microcuries. I have a number of test sources running up to 100uCi that are unregulated. I also have an item containing more than 10 Curies of radioactive gas.
    Not all of the radium dial painters died as a result of exposure, one just celebrated her 100th birthday. The instruments can be very "hot" though, with several microcuries of Radium 226. This gives of Radon gas which in turn changes into a sequence of radioactive metals including lead and Bismuth. If you breathe it in you can get a large lung dose. If you have any, don't keep them in the house!

    Robert G8RPI.
     
  4. dave

    Dave New Member

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  5. HiTech

    HiTech Well-Known Member

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    So what you are essentially telling some of us is not to eat smoke detectors for a snack? ;)

    OK, I'll post an easier one:
     

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  6. kchriste

    kchriste New Member Forum Supporter

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    HiTech,
    It looks like a Duo-Diode pack.
     
  7. HiTech

    HiTech Well-Known Member

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    U R correct!:D


    What is this component?
     

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  8. Nigel Goodwin

    Nigel Goodwin Super Moderator Most Helpful Member

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    Thermal fuses.
     
  9. HiTech

    HiTech Well-Known Member

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    Correct 'o mundo! thermal fuses or sometimes referred to as thermal cutoffs .
     
  10. JimB

    JimB Super Moderator Most Helpful Member

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    OK, my turn again.

    What is this?
     

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  11. _nox_

    _nox_ New Member

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    sort of ignitor ?
     
  12. HiTech

    HiTech Well-Known Member

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    fuel injector of some sort? Neoprene O-ring, knurled collar used as compression fitting and the body twist-locks in place or is held by a twist-lock ring. That's my guess.
     
  13. mramos1

    mramos1 Active Member

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    A dummy load or terminator?
     
  14. _nox_

    _nox_ New Member

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    A kind of "mass"/load was my first idea, too - but the design is too strange for that.
    Either it's something used in high-energy electronics or as HiTech guessed, fluidcontrol.
     
  15. JimB

    JimB Super Moderator Most Helpful Member

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    Sorry guys, you are all way off.
    JimB
     
  16. spuffock

    spuffock Member

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    It's one of those connectors that come in a bag of junk from a rally. You've only ever seen one, and will never see another the same.
     
  17. JimB

    JimB Super Moderator Most Helpful Member

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    It did come to me in a box of junk, (free), and I have seen them before, that is how I know what it is.
    JimB
     
  18. Marks256

    Marks256 New Member

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    Is it something out of a fluorescent light setup?
     
  19. zevon8

    zevon8 New Member

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    push-n-lok power cord connector. self sealing, non arcing, not for interupting current.

    that's my story and I'm sticking to it, LOL.

    edit - and I forgot, intrinsicly safe also.
     
  20. Nigel Goodwin

    Nigel Goodwin Super Moderator Most Helpful Member

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    Some type of sensor?, possibly magnetic?.
     
  21. TKS

    TKS New Member

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    temp sensor? or pressue sensor think its pressure sensor..

    Industrial use anyway.. not automotive

    Tks
     

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