Minimum voltage in short arc flashlamp ?

Discussion in 'General Electronics Chat' started by matters_100, Apr 3, 2016.

  1. matters_100

    Thread Starter New Member

    Mar 30, 2016
    15
    0
    Hi,

    I have a linear xenon flashlamp, with a short arc (approx 2.4in/ 60mm) which is used in pulsed applications.
    Assuming that for a given voltage, the current is only limited by the lamp impedance K0.
    I was wondering, once already ionized, around which voltage the lamp would stop being ionized ?
    I read a long time ago, in a not so reliable source, that the minimum voltage should be 600v for a 3in arc length.

    Thanks
     
  2. Hypatia's Protege

    Distinguished Member

    Mar 1, 2015
    2,804
    1,237
    Such calculations in regards to confined arcs are complected by 'ignorance' of an all important 'factor' (To: wit inner-vessel pressure at 'arc temperature' [i.e. peak current plasma pressure]) --- So... unless said parameter (i.e. "extinction voltage @ Imax") is specified by the manufacturer, my best advice is that you determine same via a stroboscopic (i.e. 'recurrent discharge') circuit and an O'scope....

    Best regards and good luck
    HP:)
     
    matters_100 likes this.
  3. crutschow

    Expert

    Mar 14, 2008
    13,056
    3,245
    A xenon arc lamp typically has a low voltage when operating (18-30V).
     
  4. matters_100

    Thread Starter New Member

    Mar 30, 2016
    15
    0
    Thks
     
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