The invention relates to an arrangement provided with some series-arranged combustion flash bulbs which can be ignited one after the other. According to the invention the succession of the flashes is obtained by choosing the resistive values of heating wires present in the flash bulbs to be unequal prior to flashing, and to have a low resistance of the flashed bulbs.
A multiple lamp photoflash array of the FlipFlash type having flash-sequencing circuitry for causing the lamps to flash one at a time in response to firing pulses applied to the array. All lamp circuits except for the last-to-flash lamp provide an open circuit after lamp flashing, and the last-to-flash lamp provides a short circuit or low impedance after flashing to function as a last-flash indicator switch.
