System and method for using AC and DC sensors for water treatment

An electrical water treatment system with a self-adjusting high voltage sensor circuit, the electrical water treatment system comprising:

• four or more coils, wherein each of the coils is an AC or DC coil and there is at least one DC coil and at least on AC coil;
• a memory wherein an AC threshold value and a minimum DC current is stored;
• sensors that measure quality of water;
• means for checking whether the AC threshold value is met;
• means for checking whether the minimum DC current value is met;
• means for firing the coils in a sequence, wherein the firing sequence comprises at least one of DC-DC-AC-AC and AC-DC-AC-DC, and wherein length of time for a pulse of one of the AC coils is greater than a time of a DC coil pulse;
• and
• means for self-tuning, using the measured quality of water from the sensors, one or more of the AC coils by adjusting amplitude and frequency of the pulses of the one or more AC coils, wherein a resonant condition is maintained.