The CV2296 strobotron is a neon flas tube with a commercial equivalent of NSP2.
The flash is produced when the trigger voltage initiates a discharge between the cathode and caesium coated anode at the top of the envelope. The bright column of light can be directed by a polished parabolic mirror to form a stroboscope.
For different flash rates up to the maximum of 250 per second the capacitors used are: 6-35 Hz 4 μF, 30-50 Hz 3 μF, 45-80 Hz 2 μF, 80-150 Hz 1 μF & 140-250 Hz 0.5 μF.
The anode lead is sheathed in glass to confine the discharge to the central area.
The components around the cathode are sealed in glass from the pinch and geld in a mica. The envelope has dimples in the glass to hold the mica.
The anode cap.
The wide glass tube envelope is 29 mm in diameter, and excluding the IO base pins is 90 mm tall.