Method and device for water treatment using an electromagnetic field

1. A method for treating water using an electromagnetic field, the method comprising:

subjecting the water to the electromagnetic field generated utilising an inductor coil; and

varying a frequency of a driving signal for the inductor coil such that the generated electromagnetic field has a varying frequency, wherein the frequency is varied over a range between about 100 kHz and about 500 kHz.

2. The method as claimed in claim 1 , wherein the frequency of the driving signal for the inductor coil is varied such that two or more treatment effects are electro-magnetically induced in the water.

3. The method as claimed in claim 2 , wherein at least one of the two or more treatment effects relate to one or more of a group consisting of controlling scale formation, controlling bacteria growth, and forming magnetite to prevent corrosion.

4. The method as claimed in claim 1 , wherein the electromagnetic field has a varying polarity.

5. The method as claimed in claim 1 , further comprising simultaneously applying one or more existing treatment techniques to the water.

6. A system for treating water using an electromagnetic field, the system comprising:

an inductor coil for subjecting the water to the electromagnetic field;

a driver unit coupled to the inductor coil; and

a controller unit coupled to the driver unit for varying a frequency of a driving signal generated by the driver unit such that the generated electromagnetic field has a varying frequency, wherein the frequency is between about 100 kHz and about 500 kHz.

7. The system as claimed in claim 6 , wherein the inductor coil has an electromagnetic field with varying frequency such that two or more treatment effects are electro-magnetically induced in the water.

8. The system as claimed in claim 6 , wherein the inductor coil has an electromagnetic field with varying polarity.

9. The system as claimed in claim 6 , further comprising means of achieving two or more treatment effects, at least one of the two or more treatment effects relating to one or more of a group consisting of controlling scale formation, controlling bacteria growth, and forming magnetite to prevent corrosion.

10. The system as claimed in 6 , wherein the controller unit comprises a programmable Integrated Circuit (IC).

11. The system as claimed in claim 6 , wherein the driver unit comprises a bridge-type circuit and two half-bridge actuator ICs.

12. The system as claimed in claim 11 , wherein the bridge-type circuit of the driver unit comprises a plurality of Metal Oxide Semiconductor Field Effect Transistors (MOSFETs).

13. The system as claimed in claim 6 , further comprising a power source for providing supply voltages to components of the device.

14. The system as claimed claim 13 , wherein the controller unit comprises a stabilizer circuit coupled between the power source and the controller unit.

15. The system as claimed in claim 13 , wherein the power source provides an input signal to the driver unit for generation of the driving signal.

16. The system as claimed in claim 6 , wherein the inductor coil is formed on a surface of a pipe, container or reservoir.

17. The system as claimed in claim 16 , wherein the inductor coil is formed such that the pipe, container or reservoir is located substantially inside the coil or adjacent the coil.

18. The system as claimed in claim 6 , wherein the inductor coil is formed on a separate carrier structure for disposal adjacent a pipe, container or reservoir.