In need of flash photography, natural light / flash select switch K2 is open, open the lens cover, the power switch K1 is closed and the linkage, VT began to oscillation, oscillation frequency is about 10 ~ 12kHz. AC voltage L3 generated by VD (1A, 1000V) after rectification, as energy storage capacitor C2 (200 μ F / 330V) charging, at the same time, through R2, R3 to trigger the capacitance C3 (22nF / 400V) charge. When the voltage across C2 to 300V or Ne, neon glow lit, indicating the end of charging, can flash shooting. When pressing the shutter button, when opens the shutter to the lens or cross-sectional area of 80%, with the shutter linkage of the trigger switch K3 is closed, C3 K3 and T2 trigger transformer primary discharge quickly, in the T2 sub pulse high voltage of more than 6kV, and added to the flash trigger electrode, the xenon lamps (Xe) ionization. Pass. So C2 after rapid discharge tube, the release of energy in the form of flash tube. The film after exposure, shutter release, leaves off, K3 off, VT oscillator, C2, C3 charging, ready for the next piece of film flash shooting