B 超仪配用断电保护器很有必要。因为当停电后又突然来电,尤其是由医院自备发电机供电切换为市电时,常在几秒钟之内完成,此时,B 超医生往往来不及关闭 B 超仪电源开关,电子稳压器初始瞬态浪涌输出;对仪器极为不利,严重时可能使仪器损坏。我单位 B 超仪曾因停电后突然来电出现扫描失常现象,经调试才得以恢复。为此,我们自制了断电保护器,电路见附图。该 B-instrument equipped with power-off protection is necessary. Because when a sudden power outage after a call, especially by the hospital owned generator power switch to mains, often completed within a few seconds, this time, B often too late to close the B ultrasound power switch, electronic regulator The initial transient surge output; on the instrument is extremely adverse, may cause serious damage to the instrument. My unit B super-instrument suddenly appeared due to power outages scanning scan disorders, the debug was able to recover. To this end, we made a self-protection device, the circuit shown in the drawings. This