System and method of generating high voltage variable frequency electromagnetic radiation
In a high voltage, variable frequency radiation generation system, a carrier signal supplied to a primary coil of a transformer is varied, e.g., turned ON and OFF at variable frequencies. The ON duration and/or the average amplitude of the carrier signal may also be varied. Moreover, the carrier signal may be modulated using an audio signal. The parameters to control the variation of the carrier can be provided as a recipe via a software application. A server can provide different types of apps providing different control features. The server may also collect user characteristic data and recipe usage data, and may facilitate exchange of these data and may recommend recipes based on a particular user characteristic.
1. A system for generating electromagnetic radiation, comprising:
a resonant transformer comprising a primary coil and a secondary coil;
a pulse generator generating a carrier signal using an input DC voltage signal; and
a switch connected to the pulse generator, and switched at a varying switching frequency, thereby supplying the carrier signal to the primary coil, the carrier signal being variably switched on and off, and frequency of the carrier signal being approximately equal to resonant frequency of the resonant transformer,
wherein the switch is controlled such that the switching frequency is varied from a start frequency to an end frequency during a specified period according to at least one of: (i) a linear variation, (ii) an exponential variation, and (iii) a saw tooth variation.
2. The system of claim 1 , wherein:
the specified period comprises a first sub-period and a different, second sub-period; and
the switching frequency is varied during the first sub-period according to a first variation and during the second sub-period according to a different second variation, both the first and second variations being selected from the group consisting of: (i) a linear variation, (ii) an exponential variation, (iii) a saw tooth variation, and (iv) a variation based on a plurality of preset frequencies specified by a user.
3. The system of claim 1 , wherein:
each of the start frequency and end frequency is selected from frequencies in a range from 1 Hz up to 100 kHz; and
at least one of the start frequency and the end frequency is up to one half of a frequency of the carrier signal.
4. The system of claim 1 , wherein:
switching of the switch produces a sequence of pulses of the carrier signal; and
the switch is controlled such that width of the pulses is selected according to a pulse width control signal.
5. The system of claim 1 , further comprising a variable direct current (DC) power supply generating a variable DC voltage signal, wherein:
the pulse generator is connected to the variable DC power supply;
the input DC voltage signal comprises the variable DC voltage signal; and
the variable DC power supply is controlled according to a gain signal so as to adjust voltage of the variable DC voltage signal, thereby adjusting root-mean-squared (RMS) voltage of the carrier signal according to the gain signal.
6. The system of claim 5 , wherein the variable DC power supply is controlled according to an audio signal so as to vary voltage of the variable DC voltage signal, thereby modulating the carrier signal according to the audio signal.
7. The system of claim 6 , wherein the audio signal comprises one of: (i) a stored audio signal, (ii) an external audio signal received at an audio port, and (ii) a mixed audio signal comprising the stored audio signal and the external audio signal.
8. The system of claim 7 , wherein the external audio signal comprises a streaming audio signal.
9. The system of claim 1 , further comprising a plurality of gas-filled tubes, each tube being disposed to receive electromagnetic radiation from the secondary coil, and comprising a different gas that, if excited by a voltage signal at a particular frequency and voltage, emits a radiation.