.

       HV+ o------/\/\-------------+----------------+
                Current            |         Anode _|_
     DC Power   Limiting       C1  |              | | |
      Supply    Resistor   Energy _|_+        FL1 |   ||
      (300 V              Storage ---       Xenon |   ||---- Trigger Pulse
      typical)          Capacitor  | -  Flashlamp |   ||
                                   |              | | |
                                   |       Cathode'-|-'
    HV Ret o-----------------------+----------------+