X-ray photography has the unique advantage of penetration imaging, which can obtain the information of object interior and its evolution process.It plays an irreplaceable role in various experimental research fields.The pulse generator of small X-ray machine is ignited by high voltage pulse with short rise time.This pulse is generated by the trigger amplifier and the trigger transformer and is applied to the intermediate trigger electrode of the first spark gap switch.Usually, X-ray machine trigger structure working in complex electromagnetic environment is more susceptible to space electromagnetic interference, ground potential rise, mains electromagnetic induction, space electromagnetic circuit conduction and other influences, resulting in abnormal work.The design performance of trigger structure has directly affected the stability and reliability of X-ray machine. A trigger structure which is technically compatible with trigger transformer, optical fiber trigger, battery power supply and large safety margin of key devices is designed, which can effectively improve trigger reliability and electromagnetic compatibility.
 

flash photography,trigger control,Electromagnetic compatibility (EMC)