Portable ultraviolet water purification system
First Claim
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1. A portable water purification system, comprising:
- a container having an opening and defining an interior volume suitable for holding a liquid, an ultraviolet light source configured to extend at least partially into the interior volume;
a power supply; and
a fly-back inductor electrically coupled to the power supply and the ultraviolet light source.
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Abstract
A portable water-purification system includes a container for holding a liquid and an ultraviolet light source configured for immersion in the liquid. The ultraviolet light source is a straight low-cost tube controlled by electronic circuitry for providing hot-cathode striking at a relatively low voltage using a fly-back inductor. The operation of the water purification system is controlled by a micro-controller within the electronic circuitry.
16 Citations
18 Claims
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1. A portable water purification system, comprising:
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a container having an opening and defining an interior volume suitable for holding a liquid, an ultraviolet light source configured to extend at least partially into the interior volume;
a power supply; and
a fly-back inductor electrically coupled to the power supply and the ultraviolet light source. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A portable water purification system, comprising:
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a container having an opening and defining an interior volume suitable for holding a liquid, an ultraviolet light source configured to extend at least partially into the interior volume for immersion in the liquid, the ultraviolet light source having a cathode end and an anode end, the cathode end of the ultraviolet light source being grounded;
an inductor electrically coupled to the anode end of the ultraviolet light source; and
a field-effect transistor for controlling an electrical current through the inductor;
wherein the inductor and field-effect transistor cooperate to provide a pulsed voltage to the anode end of the ultraviolet light source for emitting ultraviolet radiation. - View Dependent Claims (10, 11, 12)
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13. A method of disinfecting water, comprising:
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providing a container having an interior volume suitable for holding a liquid, the container having an opening;
inserting an ultraviolet light source through the opening and into the liquid;
applying a high frequency series of voltage pulses to the ultraviolet light source for ionizing vapor in the light source and emitting ultraviolet radiation using a uni-directional current. - View Dependent Claims (14, 15, 16, 17, 18)
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Specification