Plasma enshrouded electric discharge device
阅读：46发布：2021-10-31
专利汇可以提供Plasma enshrouded electric discharge device专利检索，专利查询，专利分析的服务。并且The arc tube of a high intensity discharge lamp is disposed within a second arc tube which has a filling that is more easily startable than that of the first arc tube. A discharge struck between the electrodes of the second arc tube aids in starting a discharge between the electrodes of the first arc tube.，下面是Plasma enshrouded electric discharge device专利的具体信息内容。
1. An arc discharge device comprising a first arc tube disposed within a second arc tube, the second arc tube containing a fill that is startable at a lower voltage than that of the first arc tube, the first arc tube containing a fill the starting voltage of which decreases with increasing arc tube temperature, the operating voltage of the first arc tube, after starting thereof, being less than the sustaining voltage of the second arc tube.
2. The device of claim 1 wherein each of said arc tubes has electrodes at each end thereof, each electrode in the first arc tube being electrically connected to the proximate electrode in the second arc tube.
3. The device of claim 1 wherein the first arc tube comprises an alumina tube having a fill including mercury, sodium and a starting gas.
4. The device of claim 3 wherein the second arc tube has a fill including mercury and a starting gas.
5. The device of claim 1 wherein the discharge in the second arc tube, after starting thereof, enshrouds the first arc tube.
6. The device of claim 5 wherein said enshrouding discharge raises the temperature of the first arc tube and reduces the starting voltage thereof.
7. The method of starting an arc discharge in an arc tube by enshrouding said arc tube in the discharge plasma of a second arc tube and heating the first arc tube to a temperature at which the voltage across the second arc tube is sufficient to start an arc discharge in the first arc tube.
8. The method of starting an arc discharge in an arc tube of a high pressure sodium vapor lamp by disposing said arc tube in a second arc tube having a lower starting voltage, starting an arc discharge in the second arc tube which heats up the first arc tube to startability, and extinguishing the arc discharge in the second arc tube after starting of the first arc tube.
9. A high pressure sodium vapor lamp comprising an arc tube, having a fill including sodium, mercury and a starting gas, disposed within a second arc tube having a fill including mercury and a starting gas, the starting voltage of the second arc tube being lower than that of the first arc tube.
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