Circuit and method of operating high pressure discharge lamps
摘要
<p>The arrangement has an estimation unit (3) coupled with a measuring unit to provide an estimation rate that represents a measure for a temporal change of burning voltage applied to the connecting terminals of a high pressure discharge lamp. A deactivating mechanism (4) interrupts the operation of the discharge lamp, if the value of the estimation rate exceeds a given threshold value. Independent claims are also included for the following: (1) an operating device for operating a high pressure discharge lamp (2) a method for predicting the failure of a high pressure discharge lamp.</p>
