https://is.gd/spec_gen = http://vinyasi.info/circuitjs1/texts/Nikola%20Tesla/The%20Inventions,%20Researches%20and%20Writings%20of%20Nikola%20Tesla,%20ch.%2063.pdf

https://is.gd/coremass = http://vinyasi.info/ne?startCircuit=coremass.txt

https://is.gd/addinduct = http://vinyasi.info/ne?startCircuit=addinduct.txt