5K Volt Can Crusher with a 100uF Capacitor

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Bob Davis has made another can crusher with a huge 5 thousand volt power supply eBay score. A 100uF capacitor doesn’t sound that big, heck I have ones that are 10 times that size in a tray right beside me as I type this. Well the big difference is the one that is beside me has a voltage rating of 50 volts. That is a far cry from the 5000 volt rating that the one in this power supply! We have featured a bunch of Bob’s can crushers here in the past but I think that this is the biggest and baddest one so far!

 

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20 Comments


  1. Yay for 2.5 joules!


  2. Oops I meant 2.5 kJ’s 🙂


  3. What’s the smoke from? I’m guessing the friction from the rapid bending melted some coating?


  4. yep @NatureTM


  5. That’s sick! I love it. Now I’m dying to know what would happen to a body part in there. Not some morbid curiosity, but wondering to be clear.


  6. Could someone explain the science behind that? I’m having trouble grasping how a can can be crushed just by being in a magnetic field.


  7. not to be sick or anything but could the coil be fitted over the head and used as a form of death sentence? Has Bob tried putting a piece of meat in the coil?


  8. They use something called rapid transcranial magnetic stimulation (RTMS) to treat depression and migranes. Maybe this would work too???? I an not going to try putting my body parts in there! Maybe I will destroy a pumpkin in my next video!!!


  9. Hi Bob,

    That exploding pumpkin video would be great! I would love to see it. 🙂


  10. IMPRESSIVE! One thing though – I recall from my technical school days that energy (in joules) is equal to one-half of capacitance times the voltage squared. Expanding this equation, Energy (joules)=0.5 x 0.0001 Farads x 5000 Volts x 5000 Volts, which is ONLY 1,250 joules (sorry Anthony). This formula can be found 3/4 of the way down the page at http://www.patentstorm.us/patents/4233835/description.html


  12. So I’m not the only one interested in knowing how this would affect organic matter when placed inside the coil. the watermelon is not a good example since the voltage was pumped directly into the melon. But it was a nice explosion none the less.


  13. Wow Kizmox,

    Those are some great videos! I love the watermelon one!!!


  14. Hi Pouncer,

    I wonder if a hot dog would make for a good simulation. I would be interested to see what would happen. I am guessing nothing since there is no metal in it but I am not sure. Only thing that might be hard is to prevent the hot dog from getting damaged from a flying coil wire.


  15. Great collection, I never saw such products… are you on Twitter, so that I can follow you.

    MacMasters



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