| 摘要 |
<p>A hand-held water purification system includes a pen-light sized ultraviolet lamp (12) that is enclosed in a quartz cover and is powered by a battery and associated ballast circuitry. The battery and ballast circuitry are connected to the lamp by switches that are under the control of a liquid-level sensor. The sensor connects the battery, the ballast circuitry and the lamp once the sensor determines that the ultraviolet lamp is fully immersed in the water. If the container (32) that holds the water is relatively large, the lamp and quartz cover end (16) of the system are used to stir the water, to ensure that all of the water comes sufficiently close to the ultraviolet lamp (12).</p> |
