What is the simplest, most accessible way to generate a 300-400V spike, continuously adjustable within the frequency range of 200Hz to
David King
"David King"
** Do the spikes need to be all of one polarity ?If bi-polar spikes are OK, then try driving a small mains transformer connected in reverse sense to normal ( say 12 volt to 240 volt ) with a differentiated square wave that is varied between 100 Hz and 1 kHz.
You will need an audio amp like the TDA3020, a 555 to generate the square waves and coupling cap chosen to get the right spike energy.
...... Phil
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