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日本光电ECG6151心电图机采用蓄电池作电源。在工作中,操作者往往不知道蓄电池电压有多少,常常碰到开机后面板指示灯亮,但按下记录按钮或记录了几个导程后,自动保护装置将电源切断,影响了急诊和外出抢救的需要。原机电压指示电路如附图虚线框外所示,此电路在设计上是根据蓄电池的电压大小来改变发光二极管(面板指示灯)的亮度。但由于变化很小,往往为操作者所忽视。电路的改进作者制作的电压指示器的起控电压定在10.8V
Japan photoelectric ECG6151 ECG machine battery power. At work, operators often do not know how much the battery voltage, often encounter the power indicator light when the panel is on, but press the record button or record a few leads, the automatic protection device will cut off the power, affecting the emergency and going out to rescue Need. The original voltage indicator circuit shown in the figure outside the dotted box, this circuit is designed according to the size of the battery voltage to change the light-emitting diode (panel indicator light) brightness. However, due to small changes, often ignored by the operator. The improvement of the circuit The voltage of the voltage indicator made by the author is controlled at 10.8V