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lossykittens@reddthat.com to Ask Electronics@discuss.tchncs.deEnglish · 2 years ago

When I was a kid my Dad made a magnet charger with some electrified copper coils would this be something that could be used to achieve similar results somehow? TIA

i.imgur.com

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When I was a kid my Dad made a magnet charger with some electrified copper coils would this be something that could be used to achieve similar results somehow? TIA

i.imgur.com

lossykittens@reddthat.com to Ask Electronics@discuss.tchncs.deEnglish · 2 years ago
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  • lightnsfw@reddthat.com
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    2 years ago

    Do you mean to use it to magnetize objects?

    • lossykittens@reddthat.comOP
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      2 years ago

      That’s correct!

      • lightnsfw@reddthat.com
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        2 years ago

        Putting a tool in a powered coil will magnetize it temporarily but I don’t think it will stay magnetic or at least not for long. They sell little magnetizers that you can get cheap that will last a lot longer though if that’s what you’re looking for…

        I have one like this around somewhere that worked well when I tried it.

        https://www.amazon.com/Ullman-No-Specialty-Magnetizer-Demagnetizer/dp/B00829S1JI/ref=sr_1_13?keywords=magnetizer&qid=1694044940&sr=8-13

        • Brownian Motion@lemmy.world
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          2 years ago

          Depending on the coils number of windings, and the size of the tool it will magnetise it pretty well. I used to do this to screwdrivers before they came pre-magnetised. And they will stay magnetised for a very long time.

          Most of the time the reason for becoming demagnetised is due to dropping the tool several (many) times.

        • cmnybo@discuss.tchncs.de
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          2 years ago

          I’ve had good results discharging a 450V 1kJ capacitor bank through several turns of 10 AWG wire. If you don’t have a capacitor bank laying around, one of those magnetizers will work just as well.

        • lossykittens@reddthat.comOP
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          2 years ago

          I appreciate it, I didn’t realize it was so temporary

        • nothacking@discuss.tchncs.de
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          2 years ago

          Really? If have had good results just placing a screwdriver inside an electromagnet, still magnetized a few years later.

          • lightnsfw@reddthat.com
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            2 years ago

            Maybe it depends on the coil/power source. When I tried it I was just messing around with a coil I had and 12v source and it was not that effective.

    • definitely@discuss.tchncs.de
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      2 years ago

      You will need to feed it with DC.

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