Hacked Gadgets Forum

October 20, 2009

5K Volt Can Crusher with a 100uF Capacitor

at 1:12 pm. Filed under Complex Hacks, Cool Gadgets, Crazy Hacks, Electronic Hacks, Insane Equipment


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 Responses to “5K Volt Can Crusher with a 100uF Capacitor”

  1. Anthony Says:

    Yay for 2.5 joules!

  2. Anthony Says:

    Oops I meant 2.5 kJ’s 🙂

  3. NatureTM Says:

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

  4. mikheil Says:

    yep @NatureTM

  5. Pouncer Says:

    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. London Says:

    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. Winston Says:

    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. Bob Davis Says:

    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. Alan Parekh Says:

    Hi Bob,

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

  10. JVM_CET Says:

    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

  11. Kizmox Says:

    This is nowhere near the biggest and baddest can crusher ever made.

    My can crusher will tear can in 2 pieces with just 1/4 of total power (14000V 2kJ charge, cant go higher because work coil will explode)

    Here is what 30000V charge did to watermelon

  12. Pouncer Says:

    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. Alan Parekh Says:

    Wow Kizmox,

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

  14. Alan Parekh Says:

    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. Laeeq Says:

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


  16. Laeeq Says:

    please send a reply if u have a twitter account.


  17. Can crusher crushes cans with electricity » Developages - Development and Technology Blog Says:

    […] Actually, I can think of a lot of rea&#115on&#115 why one wouldn’t want to do thi&#115, e&#115pecially the &#98ig &#115afety one. It look&#115 cool though, and &#115lightly le&#115&#115 co&#109plicated than the coi&#110 sh&#114i&#110ke&#114. [via ha&#99ked gadget&#115] […]

  18. Can crusher crushes cans with electricity | ToGadget , The Guide to Gadgets Says:

    […] Actually, I can think of a lot of reasons because one wouldn’t wish to do this, generally the big reserve one. It looks cool though, and somewhat reduction difficult than the coin shrinker. [via hacked gadgets] […]

  19. Bob Davis Says:

    I tried blowing up a pumpkin but I had to fill it with water first and then it still did not explode….

  20. eek Group Impulse Generator Demonstration - Project Thumper - Hacked Gadgets - DIY Tech Blog Says:

    […] system has gone through 7 revisions so far and more are in the works. Our friend Bob Davis has been making lots of similar devices but on a bit of a smaller […]

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