High Amperage Switch/MOSFET Recomendations

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Thread Starter


Joined Feb 21, 2018
I am making a coilgun and am trying to figure a good way to cut the power after a certain amount of time has passed. I have Raspberry Pi so the timing shouldn't be a problem. However, I am currently expecting the capacitors to spit out about 800A initially and it should fall to about 500A in a second. I am having trouble finding a switch/MOSFET capable of handling this. Voltage is not a problem as it's two 2.7V capacitors in series. The link to the capacitors I'm using is This.


Joined Oct 2, 2009
Sorry. Discussion on coil guns is prohibited.

6. Restricted topics. The following topics are regularly raised however are considered "off-topic" at all times and will result in Your thread being closed without question:

  • Any kind of over-unity devices and systems
  • Devices designed to electrocute or shock another person
  • LEDs to mains
  • Any kind of jammers (ie - Phone jammers)
  • Rail guns and high-energy projectile devices
  • Transformer-less power supplies
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