Capacitor
Status
In progress.
Specifications
Many stimulators have been constructed by trial and error. Also at least a dozen simulation papers have estimated the efficiency of driving the coil. What is clear is that for all existant designs, about 1-3 kV must be across the typical coil to discharge 10 kA in approximately 100 microseconds. Natural capacitor discharge may be polyphasic and require cleanup circuitry.
One suggestion is to use a very large, high-voltage (5 microFarad, kilovolt) capacitor, to drive a O(25 microhenry) coil.
OTHER THOUGHT: Shall we set the charge on the capacitor via limiting the time we allow it to charge, or via a resistor that sets the maximum voltage?
OTHER THOUGHT (Foo Camp): make some kind of rapid charge pump, that is software-controllable.
Fabrication methods
Commercial. Banks of capacitors connected to individually controllable thyristors may be useful to do rapid-fire stimulation.
Parts vendors
None yet.
Parts list
None yet.
Instructions for assembly
None yet.
Results of testing device
None yet.
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