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We could use some of these in the building I work in. :p
Technically no because it isn't near the resonant frequency of the flyback, but actually yes (more like kind of) because you'll still be able to draw sparks from it, just they will be smaller and less powerful.
Depends on the input voltage/current/frequency.
Maybe 1 cm?
It's possible, you should probably use some kind of diode for protection.I have actually burned 555 chips from shorting out the output of the flyback.
The simple driver runs at a relatively low frequency, probably under 100 Hz.It really depends on the size of your relay, bigger relays run slower than smaller relays.
In theory. If you try it, I would be interested to see what your results are.
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