八十年代以前出产的国产旋转阳极 X 线机,其旋转阳极无制动电路。由于惯性力,当使用一次,一般中速管运转时间长达10多分钟,而每次使用最长时间约6秒钟,有效利用率仅1/100。如让其自然停转,就有百分之九十九空转的损耗,缩短旋转阳极管机械寿命,对设备极为不利。我院使用的 KB、KCX 线机都无制动电路。 Domestic production before the eighties rotating anode X-ray machine, the rotating anode without a brake circuit. Due to the inertial force, when used once, the typical medium-speed tube runs for more than 10 minutes, with the longest time of about 6 seconds each time, the effective utilization rate is only 1/100. If let it stop naturally, there is a ninety-nine percent of idle loss, shorten the life of the rotating anode tube mechanical, extremely detrimental to the equipment. KB used in our hospital, KCX line machine without braking circuit.