| 摘要 |
<p>A multiple lamp photoflash array has flashsequencing circuitry for causing the lamps to flash one at a time in response to firing pulses applied to the array. All lamps 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 lastflash indicator switch.</p> |
