The secondary coil consists of hundreds, or even thousands of windings of very fine copper wire so a high voltage pulse is generated, in the order of 2-6 kV ( 2000-6000 V ), depending on the length of the flash tube, and the gas contained within the tube.
32.
The extremes being the firing pin and detonator close to the nose with a long flash tube to the booster ( typical in US designs ), or a long firing pin to a detonator close to the booster and a short flash tube ( typical in British designs ).
33.
The extremes being the firing pin and detonator close to the nose with a long flash tube to the booster ( typical in US designs ), or a long firing pin to a detonator close to the booster and a short flash tube ( typical in British designs ).
34.
In a capacitor-based strobe light, the capacitor is charged up to around 300 V . Once the capacitor has been charged, a small amount of power is diverted into a trigger transformer, a small transformer with a high turns ratio, which generates a weak, but high voltage spike required to ionize the xenon gas in a flash tube.
35.
Initially, some users and commenters suspected that the electromagnetic pulse ( EMP ) from the xenon flash tube was causing the problem by interfering with the computer's digital circuitry, but this was ruled out by tests where the light was either blocked by a card or aimed at the other side of the Raspberry Pi 2, both of which did not cause a problem.
36.
When the flash is triggered by the shutter's flash synchronization contact, the capacitor is discharged almost instantaneously through a flash tube, producing a flash of very brief duration almost instantaneously ( i . e ., the flash duration, often around 1 / 1000 of a second, is shorter than most practical shutter speeds, and full brightness is reached before the shutter has time to close appreciably ).
