Appeal No. 95-3876
Application 08/222,009
The flash control circuitry, which is located within the flash
unit, includes a power source 1, a constant voltage generating
circuit 2, a trigger circuit 3, a control circuit 4, a flash
firing control circuit 5, and a voltage doubling circuit 6.
The flash tube Xe is connected between the high voltage
terminal HV and the collector terminal VC of an insulated gate
bipolar transistor (IGBT), which is controlled by flash fire
control circuit 5. That circuit is responsive to a trigger
signal TRIGL and a flash termination signal STOPL (labeled as
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Last modified: November 3, 2007