| 摘要 |
A METHOD FOR VARYING VOLTAGE A method for varying the voltage in a high intensity discharge mercury lamp comprising the following steps: (a) energizing the lamp at a substantially fixed current; (b) selecting a predetermined voltage; (c) sensing the lamp voltage; and (d) when the lamp voltage rises above the predetermined voltage, directing a pulsed flow of gas, which gas is at a temperature sufficient to condense the mercury, against the outer surface of the lamp intermediate of its electrodes at a pulse rate and pulse duration sufficient to achieve and maintain about the predetermined voltage. |
